Which of the following statements pertaining to entropy are correct?1. The entropy of a system reaches its minimum value when it is in a state of equilibrium with its surroundings2. Entropy is conserved in all reversible processes3. Entropy of a substance is least in solid phase4. Entropy of a solid solution is not zero at absolute zero temperature

• A. 1, 2 and 3 only
• B. 2, 3 and 4 only
• C. 3 and 4 only
• D. 1, 2, 3 and 4