Information:  - An open standard is a standard that is publicly available and has various rights to use associated with it, and may also have various properties of how it was designed (e.g. open process). There is no single definition and interpretations vary with usage.  - The University Corporation for Atmospheric Research (UCAR) is a nonprofit consortium of more than 100 colleges and universities providing research and training in the atmospheric and related sciences. UCAR manages the National Center for Atmospheric Research (NCAR) and provides additional services to strengthen and support research and education through its community programs. Its headquarters, in Boulder, Colorado, include NCAR's Mesa Laboratory, designed by I.M. Pei.  - NCO ( netCDF Operators ) is a suite of programs designed to facilitate manipulation and analysis of self - describing data stored in the netCDF format .  - NetCDF (Network Common Data Form) is a set of software libraries and self-describing, machine-independent data formats that support the creation, access, and sharing of array-oriented scientific data. The project homepage is hosted by the Unidata program at the University Corporation for Atmospheric Research (UCAR). They are also the chief source of netCDF software, standards development, updates, etc. The format is an open standard. NetCDF Classic and 64-bit Offset Format are an international standard of the Open Geospatial Consortium.    After reading the paragraphs above, we are interested in knowing the entity with which 'netcdf operators' exhibits the relationship of 'instance of'. Find the answer from the choices below.  Choices: - boulder  - community  - data  - education  - format  - laboratory  - machine  - mesa  - network  - open standard  - process  - project  - software  - standard  - training  - university
A:
software