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: conserving water can be used for survival in a dry environment, Fact2: We learned about desert plants and how they adapt themselves to the hot dry desert environment so they can survive., Question: Plants can conserve water in order to survive where? (A) our planet (B) in a vacuum (C) in the desert (D) Earth's atmosphere (E) In the winter (F) in a laboratory (G) on the moon (H) forest is destroyed

Ex Output:
C


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: Amphibians have a relatively complex circulatory system with a three-chambered heart., Fact2: Frogs, toads and salamanders are amphibians., Question: What sort of circulatory system do frogs, toads, and salamanders share? (A) live birth (B) It helps them survive (C) matter vibrating (D) two-chambered heart (E) Veins and arteries. (F) biological diversity (G) three-chambered heart (H) four-chambered heart

Ex Output:

G