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: Evolution occurs in response to a change in the environment., Fact2: Extinction is a natural part or the process of evolution., Question: What happens to an environment to cause extinction? (A) relocation (B) changes (C) rain (D) exposure (E) forces (F) wind (G) Pollution (H) discovery

Ex Output:
B

Ex Input:
Fact1: Prokaryotes are single-celled organisms that lack a nucleus., Fact2: Prokaryotes are usually microscopic and bacteria is an example of a prokaryote., Question: What are single celled organisms that do not have a nucleus? (A) Most plants (B) nucleus (C) ferns (D) fossil fuels (E) bushes (F) Eukaryotes (G) leech (H) bacteria

Ex Output:
H

Ex Input:
Fact1: Some birds are pollinators that co-evolved with plants., Fact2: Birds and flying insects are the primary pollinator's of red flower plants., Question: What do birds pollinate? (A) seeds (B) vegetation (C) Energy. (D) potatoes (E) Flowers (F) Birds (G) Eggs (H) Nests

Ex Output:
E