Q: You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).
Paragraph: As the amount of water increases, the melting point of rock decreases.
 Question: Richard dropped two identical rocks, one into a puddle, and the other into a swimming pool. After dropping both rocks, the rock dropped into the swimming pool had 
 Choices: A)a higher melting point than the other rock 
B)a lower melting point than the other rock
A:
a lower melting point than the other rock