Please answer the following question: Information:  - Web development is a broad term for the work involved in developing a web site for the Internet (World Wide Web) or an intranet (a private network). Web development can range from developing the simplest static single page of plain text to the most complex web-based internet applications, electronic businesses, and social network services. A more comprehensive list of tasks to which web development commonly refers, may include web engineering, web design, web content development, client liaison, client-side/server-side scripting, web server and network security configuration, and e-commerce development. Among web professionals, "web development" usually refers to the main non-design aspects of building web sites: writing markup and coding. Most recently Web development has come to mean the creation of content management systems or CMS. These CMS can be made from scratch, proprietary or open source. In broad terms the CMS acts as middleware between the database and the user through the browser. A principle benefit of a CMS is that it allows non-technical people to make changes to their web site without having technical knowledge.  - Web design encompasses many different skills and disciplines in the production and maintenance of websites. The different areas of web design include web graphic design; interface design; authoring, including standardised code and proprietary software; user experience design; and search engine optimization. Often many individuals will work in teams covering different aspects of the design process, although some designers will cover them all. The term web design is normally used to describe the design process relating to the front-end (client side) design of a website including writing mark up. Web design partially overlaps web engineering in the broader scope of web development. Web designers are expected to have an awareness of usability and if their role involves creating mark up then they are also expected to be up to date with web accessibility guidelines.  - Adobe Premiere Pro is a timeline - based video editing software application . It is part of the Adobe Creative Cloud , which includes video editing , graphic design , and web development programs . Premiere Pro is used by broadcasters such as the BBC and CNN . It has been used to edit feature films , such as Gone Girl , Captain Abu Raed , and Monsters , and other venues such as Madonna 's Confessions Tour .    After reading the paragraphs above, we are interested in knowing the entity with which 'adobe premiere pro' exhibits the relationship of 'license'. Find the answer from the choices below.  Choices: - open source  - proprietary software
A:
proprietary software