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: the force of water against the seed coat causes a root to emerge from a seed, Fact2: Water is made up of H2O molecules., Question: what is forced against the seed coat to cause the root to emerge from a seed? (A) germination (B) UV (C) urea (D) h2o (E) sunflower (F) rain (G) oil (H) newtons

Ex Output:
D

Ex Input:
Fact1: Insects may live in large colonies and have complex social behaviors., Fact2: Ants are social insects living in colonies., Question: which of the following are known to have complex social behaviors? (A) dogs (B) Wasps (C) tigers (D) Birds (E) toads (F) Tasmanian devils (G) koalas (H) Ants

Ex Output:
H

Ex Input:
Fact1: fog is formed by water vapor condensing in the air, Fact2: San Francisco for its cultural tolerance and frequent fog., Question: What is formed by water vapor condensing in the air? (A) cloudy and rainy weather (B) peachleaf willow (C) Something found in San Francisco (D) At the peak of a mountain (E) By wind and rain (F) Something made from fermented ricce (G) Something that makes plants green (H) A transportation fuel

Ex Output:
C