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").

Ex Input:
Fact1: a black hole is formed by a high-mass star collapses, Fact2: Black Holes Black holes are the inevitable conclusion of Einstein's General Theory of Relativity., Question: When do stars fulfill the inevitable conclusion of Einstein's General Theory of Relativity? (A) inactive (B) Winter (C) an object (D) observe it (E) collapse (F) light (G) our star (H) ligt

Ex Output:
E


Ex Input:
Fact1: Mutualism is a symbiotic relationship in which both species benefit., Fact2: Dogs and humans are symbiotic species., Question: what exists between dogs and humans? (A) mutualism (B) gravity (C) communication (D) antigens (E) several genes (F) space between (G) electrons (H) german shepherd

Ex Output:
A


Ex Input:
Fact1: Most plants grow roots down into the soil to absorb water and minerals., Fact2: If the plant is green, it is a producer., Question: What can a producer grow down into the soil in order to absorb minerals and water? (A) Trees (B) stems (C) roots (D) Oak (E) seeds (F) burrs (G) grass (H) water absorbing petals

Ex Output:

C