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: Sperm had to swim from male to female reproductive organs for fertilization., Fact2: Gametes, the sperm and eggs, are produced by mitosis in the haploid gametophyte., Question: What swims from male to female reproductive organs for fertilization? (A) gametes (B) barnacles (C) fur seals (D) eggs (E) offspring (F) haploid (G) seeds (H) diploid

Ex Output:
A


Ex Input:
Fact1: a fire requires oxygen to burn, Fact2: In the vacuum of space, there's no oxygen to burn., Question: Where is fire impossible? (A) evaporation (B) In space (C) A computer (D) uncontrolled (E) Inside a car (F) On television (G) summer end (H) On a mountain

Ex Output:
B


Ex Input:
Fact1: Algae have varied life cycles., Fact2: Algae and many other aquatic plants are eaten by a variety of invertebrates and fish., Question: Certain aquatic organisms eaten by fish have what kind of life cycles? (A) parasites (B) varied (C) complex (D) gills (E) Allergies (F) kinetic (G) survival (H) recycling

Ex Output:

B