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

$\begin{array}{1 1} (1)\;p_ov_o \\ (2)\; \bigg(\large\frac{13}{2}\bigg)p_ov_o \\ (3)\;\bigg(\large\frac{11}{2} \bigg)p_0v_0\\ (4)\;4p_0v_0\end {array}$