A radar system uses magnetron as high power RF source. Its transmitter emits 300 kW RF power at 10% duty factor. If the efficiency of radar transmitter during pulse is 60% and the power required during pulse off period is 1 kW. The average power dissipation in radar is-

A. 50.9 kW

B. 301 kW

C. 20.9 kW

D. 150.5 kW

Answer: Option C