One mole of an ideal gas in initial state A undergoes a cyclic process ABCA, as shown in the figure. Its pressure at A is `P_0`. Choose the correct option (s) from the following
A. Internal energies at A and B are the same
B. Work done by the gas in process AB is `P_(0) V_(0) in 4`
C. pressure at C is `(P_0)/(4)`
D. Temperature at C is `(T_0)/(4)`
