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: a plants require water for survival, Fact2: Life-long learning is no longer a luxury for the few, but a survival skill for all., Question: Plants require what for life-long learning? (A) Light (B) protein (C) Energy. (D) gametes (E) genes (F) water (G) energy (H) oxygen

Ex Output:
F

Ex Input:
Fact1: Feathers help birds fly and provide insulation., Fact2: Some birds are flightless birds., Question: Why do the flightless have feathers? (A) layers of fat (B) Sublimation (C) it needs them (D) warm-blooded (E) Air conditioning (F) Radiation (G) Insulation (H) protect them

Ex Output:
G

Ex Input:
Fact1: Protozoa make humans sick when they become human parasites., Fact2: Illness-causing parasites include the protozoa Cyclospora and Toxoplasma gondii ., Question: What does Toxoplasma gondii do to a human? (A) antibodies (B) destruction (C) Makes them sick (D) gas spreads in the air (E) coliform (F) Makes them strong (G) Inject venom (H) Makes them healthy

Ex Output:
C