A gas is expanded from volume `V_(0) = 2V_(0)` under three different processes. Process `1` is isobaric process, process `2` is isothermal and process `3` is adiabatic. Let `DeltaU_(1), DeltaU_(2) and DeltaU_(3)` be the change in internal energy of the gas in these three processes. then
A. `DeltaU_(1)gtDeltaU_(2)gtDeltaU_(3)`
B. `DeltaU_(1)ltDeltaU_(2)ltDeltaU_(3)`
C. `DeltaU_(2)ltDeltaU_(1)ltDeltaU_(3)`
D. `DeltaU_(2)ltDeltaU_(3)ltDeltaU_(1)`