Which statement correctly defines entropy and has the right example of a process with a positive change in entropy?

• A. Entropy is the degree of randomness of a system. The following process has a positive change in entropy: CH₂CH₂OH(l) → CH₃CH₂OH(g) at 25°C.
• B. Entropy is the degree of randomness of a system. The following process has a positive change in entropy: CH₃CH₂OH(g) → CH₃CH₂OH(l) at 25°C.
• C. Entropy is the total energy change of a system. The following process has a positive change in entropy: CH₃CH₂OH(l) → CH₃CH₂OH(g) at 25°C.
• D. Entropy is the total energy change of a system. The following process has a positive change in entropy: CH₃CH₂OH(g) → CH₃CH₂OH(l) at 25°C.

Answer: (A)