The correct option is D 0,RT2ln(V2V1),−R(T2−T1)
From the V−T graph,
In process AB, volume is constant.
As volume is constant, work done in this process is 0.
In process BC, temperature is constant.
Work done in isothermal process is
In process CA, V∝T
or VT is constant i.e pressure is constant.
Thus, option (d) has the correct graph.