The cyclic process for 1 mole of an ideal gas is shown in the V-T diagram. The work done in AB, BC and CA respectively is
A. `0,RT_(2)In((V_(1))/(V_(2))),R(T_(1)-T_(2))`
B. `R(T_(1)-T_(2)),0,RT_(1)InV_(1)/(V_(2))`
C. `0,RT_(2)In(V_(2)/(V_(1))),R(T_(1)-T_(2))`
D. `0,RT_(2)In(V_(2)/(V_(1))),R(T_(2)-T_(1))`