A radar system uses TWTA as high power RF source for transmitting 300 W peak power. The efficiency of transmitter during pulse is 75% and the transmit duty is 25%. If the DC power required during pulse off period is 20 W. The average power dissipation in TWTA is

A. 81.25 W

B. 125 W

C. 50 W

D. 40 W

Answer: Option D