The following hysteresis cycle represents the adiabatic loading and unloading of a sample in the elastic region, without thermal equilibrium. Which part of the curve is associated with decrease in the temperature of the sample?

The following hysteresis cycle represents the adiabatic loading and unloading of a sample in the elastic region, without thermal equilibrium. Which part of the curve is associated with decrease in the temperature of the sample? Correct Answer D

First, the sample is loaded adiabatically and reached to point x. So the sample is cooled down below room temperature. If the time is allowed, the sample heats up and material is expanded and reaches to point Y. So the curve B is associated with increase in the sample temperature. After this, when the sample is unloaded adiabatically, the temperature of the sample increases and reached to point Z. Hence, with time it cools down to room temperature and material shrinks. So, the curve D is associated with decreases in the temperature.