In this task, you are given two facts, and a multiple-choice question. Based on the given facts, answer the question with index of the correct option (e.g, "A").
Q: Fact1: adding salt to a solid decreases the freezing point of that solid, Fact2: Salt is sodium chloride., Question: Adding sodium chloride to a solid does what? (A) chemical reaction (B) decreases the freezing point (C) a hemisphere is tilted away from the sun (D) heat production (E) reusing materials (F) water conservation (G) It gets heated up (H) massive damage
A:
B