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 donebythe gas in process AB is $$P_0V_0 \ln 4$$

C

Pressure at C is $$\frac{P_0}{4}$$

D

Temperature at C is $$\frac{T_0}{4}$$