One mole of an ideal gas is taken from A to B , from B to C and then back to A . The variation of its volume with the temperature for that change is as shown . Its pressure at A is `P_(0)` , volume is `V_(0)` . Then , the internal energy .

Options

A. At A is more than at B
B. At C is less than at B
C. At B is more than at
D. At A and B are equal

Answer

D

Explanation

Internal energy of an ideal gas only depends upon its temperature.
T = constant : `T_A = T_B , :. U_A = U_B`