In the following \( P-V \) diagram of an ideal gas, \( A B \) and \...

In the following \( P-V \) diagram of an ideal gas, \( A B \) and \( C D \) are isothermal where as \( B C \) and \( D A \) are adiabatic process. The value of \( V_{B} / V_{C} \) is
P
\( (\mathrm{A})=\mathrm{V}_{\mathrm{A}} N_{\mathrm{D}} \)
\( (B)V_{A} / V_{D} \)
(C) \( V_{A} / V_{D} \)
(D) cannot say