A signal transmitted from an Earth station bounces back from a geostationary satellite, with an altitude of 35864 km from the Earth's surface. The range from the Earth station is 38200 km. The round trip time is about: (excluding processing delays and assuming c = 3 × 108 m/s)

A signal transmitted from an Earth station bounces back from a geostat

1.	A signal transmitted from an Earth station bounces back from a geostationary satellite, with an altitude of 35864 km from the Earth's surface. The range from the Earth station is 38200 km. The round trip time is about: (excluding processing delays and assuming c = 3 × 108 m/s)
A.	255 ms
B.	127 ms
C.	239 ms
D.	120 ms
Answer» B. 127 ms