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: heating salt water causes the water to evaporate while the salt remains, Fact2: Flash evaporators are used to make fresh water from salt water., Question: Doing what to salt water causes the water to become fresh water? (A) watershred (B) freezing (C) Regrows it (D) migrate (E) pouring (F) heating (G) cooling (H) erosion

Ex Output:
F


Ex Input:
Fact1: building housing developments usually requires replacing animal habitats, Fact2: For salmon, habitat includes freshwater, estuarine and marine habitat., Question: What animal would not have its territory covered over by a housing development? (A) humans (B) bullfrogs (C) Frogs (D) raccoon (E) pigeons (F) salmon (G) opossum (H) deer

Ex Output:
F


Ex Input:
Fact1: the movement of an air mass over Earth 's surface causes local weather changes, Fact2: Earth is our planet., Question: where does the movement of an air mass cause local weather changes? (A) outer space (B) mechanical (C) coastlines (D) our planet (E) global warming (F) The atmosphere (G) the sun (H) h2o

Ex Output:

D