The melting points of most of the solid substances increases with a...

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The melting points of most of the solid substances increases with an increase of pressure acting on them. However, ice melts at a temperature lower than its usual melting point, when the pressure increases. This is because :
\( \mathrm{P} \)
(A) Ice is less dense than water
(B) Pressure generates heat
(C) The bonds break under pressure
(D) Ice is not a true solid
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