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").

Example Input: Fact1: Loss of ozone has created an ozone hole over Antarctica., Fact2: Antarctica's ozone layer is threatened by depletion., Question: What can loss of ozone lead to? (A) irritants (B) bad weather (C) Car accidents (D) ozone hole (E) rain (F) A hurricane (G) stormy weather (H) destroyed crops
Example Output: D

Example Input: Fact1: bees convert nectar into honey, Fact2: Butterflies feed on nectar produced by flowers., Question: From what part of the plant do bees collect the substance they need to make honey? (A) Fruit (B) a hosta (C) food (D) Leaves (E) keratin (F) Flowers (G) liquids (H) Stem
Example Output: F

Example Input: Fact1: hydropower requires damming a river, Fact2: Many dams along rivers and creeks help prevent floods., Question: Hydropower requires what? (A) a hydraulic system (B) increases a body's strength (C) helping to prevent floods (D) Electric generators (E) flow of electrons (F) energy of moving objects (G) power stations (H) fissures of hot, acidic water
Example Output:
C