Identify the correct statement regarding entropy

Options

A. At `0^(@)C`, the entropy of a perfectly crystalline substance is taken to be zero
B. At absolute zero of temperature, the entropy of a perfectly crystalline substance is +ve
C. At absolute zero of temperature, the entropy of all crystalline substances is taken to be zero
D. At absolute zero of temperature, the entropy of a perfectly crystalline substance is taken to be zero

Answer

D

Explanation

This is the statement of third law of thermodynamics.