Identify the correct statement regarding entropy

Options

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

Answer

B

Explanation

According to 3rd law of thermodynamics at absolute zero temperature entropy of perfectly crystalline substance is taken to be zero.