By International Agreement, Greenwich Mean Time Is

By international agreement, Greenwich Mean Time is:

A) the time in Washington, D.C., which is the master reference time for all points on Earth
B) the time in New York, which is the master reference time for all points on Earth
C) the time at the Prime Meridian, which is the master reference time for all points on Earth
D) the local time where you live and, and which changes based on your location
E) the local time in Brussels