The peak voltage in the output of a half wave diode rectifier fed with a sinusoidal signal without filter is 10V. The d. c. component of the output voltage is :-

Question

( A ) $ {10}V $
( B ) $\frac {20}{\pi} V $
( C ) $\frac {10}{\pi} V $
( D ) $\frac {10}{\sqrt 2}V $