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 Q]: Fact1: Mollusks have a circulatory system with one or two hearts that pump blood., Fact2: An abalone is a shellfish or mollusk., Question: What has a circulatory system with one or two hearts that pump blood? (A) a fish (B) sharks (C) abalone (D) elephants (E) humans (F) crocodiles (G) giraffes (H) fur seals
[EX A]: C

[EX Q]: 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 A]: D

[EX Q]: Fact1: coal is used for generating heat by burning, Fact2: Chemical energy stored in coal is released as heat energy when the coal is burned., Question: what does coal release? (A) heat (B) fire (C) steam (D) carbon (E) toxins (F) oxygen (G) fossil (H) smoke
[EX A]:
A