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: building housing developments usually requires replacing animal habitats, Fact2: Habitat destruction is the primary cause of extinction or threat of extinction for all animals., Question: Building housing developments may cause  (A) eruptions (B) colder weather (C) disease (D) erosion (E) extinction (F) mutations (G) Destroy bridges (H) deforestation

Ex Output:
E


Ex Input:
Fact1: when a metal rusts , that metal becomes orange on the surface, Fact2: Iron rusts in the presence of oxygen and water., Question: Exposure to oxygen and water can cause iron to  (A) decrease strength (B) melt (C) uncontrollable burning (D) thermal expansion (E) turn orange on the surface (F) vibrate (G) Extremes of temperature (H) levitate

Ex Output:
E


Ex Input:
Fact1: poisonous darts are used for defense by sea anemones, Fact2: Poison dart frogs are the source of a toxin used by natives on their poison darts., Question: a toxin is used for defense by what? (A) each species (B) related organisms (C) quail (D) prokaryotic cells (E) dogs (F) antigens (G) sea anemones (H) humans

Ex Output:

G