Which of the following statements best explains why Plaster of Paris (POP) must be stored in moisture-proof containers?

Options:

• A: It absorbs moisture and converts into a hard solid mass of gypsum, rendering it useless.
• B: It reacts with atmospheric carbon dioxide to form calcium carbonate, losing its setting property.
• C: Moisture catalyzes its decomposition into calcium oxide and sulphur trioxide gas.
• D: It undergoes rapid efflorescence, losing its water of crystallization and turning into dead burnt plaster.

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