<br> The above p-v diagram represents the thermodynamic cycle of an engine, operating with an ideal monoatomic gas. The amount of heat extracted from the source in a single cycle is

Question

( A ) $(\frac{11}{2} ) p_0v_0$
( B ) $p_0 v_0$
( C ) $4p_0 v_0$
( D ) $(\frac{13}{2} ) p_0v_0$