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: volcanic ash in the atmosphere decreases the temperature by blocking the sun, Fact2: Supersaturation is inferred to be a common state for atmospheric haze particles., Question: What decreases the temperature by blocking the Sun? (A) cilia (B) the Sun (C) the wind (D) haze (E) ice (F) fat (G) rain (H) acids

Ex Output:
D


Ex Input:
Fact1: Biodiversity increases the productivity and stability of ecosystems., Fact2: Ecotourism, on the other hand, can help to conserve biodiversity., Question: What increases the stability of ecosystems? (A) overpopulation (B) water consumption (C) loose soil (D) Quality of life (E) agriculture (F) deforestation (G) ecotourism (H) trees

Ex Output:
G


Ex Input:
Fact1: an aquatic animal requires great amounts of water to survive, Fact2: Fish and other small aquatic animals can be placed in the aquarium for visual purposes., Question: What do fish require to survive? (A) food particles (B) ocean water (C) salt and water. (D) Getting eaten (E) Heavy boots (F) aerobic capacity (G) Great amounts of water (H) Wait staff

Ex Output:

G