Q: 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").
Fact1: igneous rocks are formed from magma cooling, Fact2: Igneous rocks crystallize from magma from mantle., Question: Where does the lava come from that makes igneous rocks? (A) Mantle (B) tube (C) Core (D) Mountains (E) Crust (F) heat (G) Earth (H) cracking
A:
A