It is required to deliver an output DC power of 500 W to a resistive load. The transformer rating required in case of half-wave, conventional full-wave and bridge rectifiers, respectively, is

A. 1.7 kW, 616 W, 871 W

B. 1.7 kW, 871 W, 616 W

C. 616 kW, 1.7 W, 871 W

D. 871 kW, 616 W, 1.7 W

Answer: Option B