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: Flagella help prokaryotes move., Fact2: Flagella and cilia are similar in structure., Question: What helps movement? (A) stamina (B) fur (C) cilia (D) hair (E) kinetic (F) nerves (G) motors (H) elastic

Ex Output:
C


Ex Input:
Fact1: Earth 's tilt on its rotating axis causes seasons to change, Fact2: During that time the seasons change from fall to winter to spring to summer., Question: Earth 's tilt on its rotating axis causes fall to change to what? (A) winter (B) break off (C) Inches (D) cold (E) autumn (F) spring (G) fall permanently (H) nothing

Ex Output:

A