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: Flagella help prokaryotes move., Fact2: Most prokaryotes are unicellular., Question: What helps unicellular organisms move? (A) evaporation (B) bacteria (C) heat energy (D) glucose (E) sweating (F) flagella (G) legs (H) blood

Ex Output:
F


Ex Input:
Fact1: Organisms cluster around hydrothermal vents in the ocean floor., Fact2: Background Hot water vents form inside cracks in the ocean floor., Question: Organisms cluster around hot water inside cracks where? (A) loose soil (B) ocean floor (C) food and shelter (D) tectonic plates (E) the ground (F) allow growth (G) Absorb light (H) survive

Ex Output:
B


Ex Input:
Fact1: Most amphibians breathe with gills as larvae and with lungs as adults., Fact2: An adult frog has lungs and teeth., Question: Adult frogs have what and breathe with gills as larvae? (A) embryos (B) a fish (C) ovaries (D) grow (E) teeth (F) survive (G) NaCl (H) oxygen

Ex Output:

E