Detailed 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").
Problem:Fact1: extreme heat and pressure change rock into metamorphic rock, Fact2: Marble is a metamorphic rock., Question: What is marble formed from? (A) earthquakes (B) bases (C) white (D) liquid (E) cells (F) convection (G) conduction (H) heat
Solution:
H