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: Migrants typically travel long distances., Fact2: Migrant birds arrive., Question: What travels long distances? (A) humans (B) jets (C) rocks (D) birds (E) camels (F) cocoons (G) Light (H) eggs
[EX A]: D

[EX Q]: Fact1: information in an organism 's chromosomes cause genetic traits to be passed down to that organism 's offspring, Fact2: DNA, which contains our genetic code, is the basic building block of chromosomes., Question: DNA causes what to inherit genetic traits? (A) offspring (B) some mammals (C) ancestors (D) Nematoda (E) heterotrophs (F) animals (G) minerals (H) grandparents
[EX A]: A

[EX Q]: Fact1: Chordates have a complete digestive system and a closed circulatory system., Fact2: Vertebrates are members of of a larger group, the chordates ., Question: vertebrates have a complete digestive system and a what? (A) Veins and arteries. (B) lack of backbone (C) bruised brain stem (D) critical organs (E) closed circulatory system (F) incomplete circulatory system (G) characteristics (H) sensory neurons
[EX A]:
E