The pressure versus temperature diagram of a given system at certain low temperature range found to be parallel to the temperature axis the in the liquid-to-sol

The pressure versus temperature diagram of a given system at certain low temperature range found to be parallel to the temperature axis The in the liquid-to-solid transition region. The change in the specific volume remains constant in this region. The conclusion one can get from the above is (a) the entropy solid is zero in this tempera- ture region (b) the entropy increases when the system goes from liquid to solid phase in this temperature region (c) the entropy decreases when the system transforms from liquid to solid phase in this temperature region (d) the change in entropy is zero in the liquid- to-solid transition region