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: if gas is heated then that gas will expand, Fact2: An increase in temperature causes a gas to expand., Question: what affects a gas? (A) electricity (B) kinetic energy (C) temperature (D) Evaporation (E) salinity (F) Pollution (G) wind (H) magnetism

Ex Output:
C


Ex Input:
Fact1: a flashlight requires a source of electricity to produce light, Fact2: Flashlights can help children see better., Question: Children see better with a source of electricity to do what? (A) focusing a lens (B) staying warm (C) survival (D) reproduce (E) produce light (F) remove electricity (G) produce darkness (H) remove light

Ex Output:
E


Ex Input:
Fact1: Cells are the microscopic building blocks of organisms., Fact2: Any living being is an organism., Question: What is the microscopic building block of any living being? (A) trees (B) cell (C) oxygen (D) moss (E) molecule (F) plants (G) blood (H) life

Ex Output:

B