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: the force of water against the seed coat causes a root to emerge from a seed, Fact2: Water is made up of H2O molecules., Question: what is forced against the seed coat to cause the root to emerge from a seed? (A) germination (B) UV (C) urea (D) h2o (E) sunflower (F) rain (G) oil (H) newtons

Ex Output:
D

Ex Input:
Fact1: threatening behavior by predators causes a porcupine to extend its quills, Fact2: Puffers are smooth skinned while Porcupines have the characteristic spines or quills., Question: What does a porcupine do with its spines when it's threatened? (A) killing insects (B) Shoot them (C) kill them (D) protect them (E) Extend them (F) Shed them (G) Retract them (H) behave

Ex Output:
E

Ex Input:
Fact1: fanning a fire increases the oxygen near the fire, Fact2: Air is used as a source of oxygen., Question: What does fanning a fire increase? (A) converting electricity to heat (B) Chemical energy (C) the air near the fire (D) activation energy (E) igniting fuel and oxidiser (F) flow of electrons (G) kinetic energy (H) Electrical energy

Ex Output:
C