Which of the following is true about melting point of a liquid?
A. The presence of dissolved impurities increases the melting of a pure solid B. An increase in pressure decreases the melting point of a substance that contracts in volume on freezing, more than the one that expands in volume. C. The melting point is not the same as the solidification of a substance D. The presence of the dissolved impurities does not change the melting point of a pure solid
