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: Aging is associated with the death of cells., Fact2: When telomeres become too short, the cell dies., Question: What is associated with aging? (A) Extra cells (B) intelligence (C) forest is destroyed (D) Chemical energy (E) Strong cells (F) oxidation reaction (G) Short telomeres (H) massive damage

Ex Output:
G


Ex Input:
Fact1: a flashlight requires a source of electricity to produce light, Fact2: Lanterns and flashlights are sources of light used for camping., Question: What does a lantern use a source of electricity for? (A) heat energy (B) staying warm (C) enclose light (D) produce light (E) absorb heat (F) reflect light (G) to move people (H) protect them

Ex Output:
D


Ex Input:
Fact1: bacteria cause food to spoil, Fact2: Water can be tested for coliform and fecal coliform bacteria., Question: What causes food to spoil? (A) contamination (B) influenza (C) coliforms (D) toxins (E) disease (F) Dehydration (G) Pollution (H) Pesticides

Ex Output:

C