Which of the following statements on communication by geosynchronous satellites are correct?
1. The propagation loss over each direction (uplink are downlink) is about 200 dB at 5 GHz.
2. Radius of the geosynchronous orbit is 42250 km.
3. An arc of about 17° must be covered by the satellite antenna in the equatorial plane.
4. The polar regions are well covered by the satellite antenna.
Select the correct answer using the options given below:

A. 1, 2 and 4

B. 2 and 3

C. 1 and 4

D. 1, 2 and 3

Answer: Option D