A large iceberg melts at the base, but not at the top, because of the reason that

A. Ice at the base contains impurities which lowers its melting point

B. Due to the high pressure at the base, its melting point reduces

C. The iceberg remains in a warmer condition at the base

D. All (A), (B) and (C)

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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