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: All chemical reactions require activation energy to get started., Fact2: Fire is a chemical reaction., Question: What does fire require to get started? (A) an engine (B) activation energy (C) water (D) energy usage (E) direct energy (F) dogs (G) activated almonds (H) adding heat
[EX A]: B

[EX Q]: Fact1: Secondary meristem is located within and around the vascular tissues., Fact2: Plant tissues are produced from meristems., Question: What has vascular tissue? (A) rocks (B) the Sun (C) trees (D) plants (E) grass (F) Conifers (G) all plankton (H) Oak
[EX A]: D

[EX Q]: Fact1: Absorption of nutrients occurs mainly in the small intestine., Fact2: Small Intestine Structurally, the small intestine is a tubular organ., Question: Where does absorption of nutrients occur? (A) the Atlantic (B) in the beehive (C) prokaryotic cells (D) interior chambers (E) In a tubular organ (F) tissue made of chondrocytes (G) occurs over a wide range (H) trucks and cars
[EX A]:
E