Instructions: 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").
Input: Fact1: when water freezes , that water expands, Fact2: Water pipes can freeze and burst., Question: Pipes can burst because at low temperatures, water does what? (A) break off (B) moves (C) expand (D) evaporate (E) squeeze (F) flooding (G) boil (H) shrink
Output:
C