What Is Longitude

What is longitude?

A) Uses plastic or conductive polymers instead of silicon-based microchips,allowing them to be washed or exposed to water without damaging the chip
B) A device that measures the acceleration (the rate of change of velocity) of an item and is used to track truck speeds or taxi cab speeds
C) A satellite-based navigation system providing extremely accurate position,time,and speed information
D) An east/west measurement of position