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 Q]: Fact1: when a metal rusts , that metal becomes orange on the surface, Fact2: Cast-iron and steel surfaces are susceptible to corrosion in the form of rust., Question: Cast-iron and steel surfaces are susceptible to becoming what on the surface? (A) hardness (B) solid (C) irritants (D) acids (E) orange (F) heat (G) Unsafe (H) damaging
[EX A]: E

[EX Q]: Fact1: better senses have a positive impact on an animal 's survival, Fact2: All dogs are animals ., Question: what can have a positive impact on survival with better senses? (A) pugs (B) deer (C) pigs (D) mice (E) dog (F) cats (G) bird (H) cows
[EX A]: E

[EX Q]: Fact1: Blood is a fluid connective tissue., Fact2: Connective tissue is classed as visco-elastic., Question: A visco-elastic substance in the body is (A) fluid (B) blood (C) fat (D) osculum (E) finger nails (F) smooth (G) bone (H) teeth
[EX A]:
B