Q:Question: "What was the longitudinal range of the system in December 2012?"  Context: "The BeiDou-2 system began offering services for the Asia-Pacific region in December 2012. At this time, the system could provide positioning data between longitude 55°E to 180°E and from latitude 55°S to 55°N."  Answer:
A:
between longitude 55°E to 180°E