10 gm of a solid (sp. Heat capacity = 0.8 cal/ K-gm) is heated from `-73^(@)` to `-23^(@)` C at constant pressure. The increase in entropy of the solid is:-

Options

A. 0
B. `80 xx ln (5/4)` cal /K
C. `80 xx ln (23/73)` cal/k
D. 20.00 cal/K

Answer

B