A signal transmitted from an Earth station bounces back from a geostationary satellite, with an altitude of 35864 km from the Earth 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: Option A
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