Three different processes that can occur in an ideal monoatomic gas are shown in the P vs V diagram. The paths are labelled as $\mathrm{A} \rightarrow \mathrm{B}, \mathrm{A} \rightarrow \mathrm{C}$ and $\mathrm{A} \rightarrow \mathrm{D}$. The change in internal energies during these process are taken as $\mathrm{E}_{\mathrm{AB}}, \mathrm{E}_{\mathrm{AC}}$ and $\mathrm{E}_{\mathrm{AD}}$ and the work done as $\mathrm{W}_{\mathrm{ab}}, \mathrm{W}_{\mathrm{ac}}$ and $\mathrm{W}_{\mathrm{ad}}$. The correct relation between these parameters are