Figure shows variation of internal energy U with the density of one mole of ideal mono – atomic gas for a thermodynamic cycle ABCA. Here process AB is a part of rectangular hyperbola.
Incorrect diagram for the above process among the following is
Process C to A is isothermal process, with increasing volume and decreasing pressure.
Process A to B is isobaric process, with decreasing volume.
Process B to C is isochoric process , with increasing temperature.