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: Loss of ozone has created an ozone hole over Antarctica., Fact2: Antarctica's ozone layer is threatened by depletion., Question: What can loss of ozone lead to? (A) irritants (B) bad weather (C) Car accidents (D) ozone hole (E) rain (F) A hurricane (G) stormy weather (H) destroyed crops
[EX A]: D

[EX Q]: Fact1: killing microorganisms in food can be used to extend the shelf life of that food, Fact2: Cooking kills the microorganisms., Question: What can extend the shelf life of food? (A) cooking it (B) Enzymes (C) evaporation (D) rays or beams (E) running it under water (F) Proteins (G) seasoning it (H) putting it on a counter
[EX A]: A

[EX Q]: Fact1: All animals are heterotrophs., Fact2: Alligators are cold-blooded animals., Question: What are all alligators? (A) solid, liquid, gas (B) important habitats (C) Under 32 degrees (D) heterotrophs (E) colder and wetter (F) strong (G) homogenous (H) an organism's body
[EX A]:
D