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: the movement of tectonic plates causes volcanic eruptions, Fact2: Earthquakes are caused by movement of the tectonic plates., Question: what causes volcanic eruptions? (A) scattered light (B) eukyarotes (C) earthquakes (D) heating liquids (E) Water expanding (F) heat energy (G) Greenhouse gases (H) kinetic energy
Output:
C