Detailed Instructions: 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").
Problem:Fact1: Chordates have a complete digestive system and a closed circulatory system., Fact2: Because reptiles are vertebrates, they are chordates., Question: what have complete digestive systems? (A) a fish (B) saliva (C) mammals (D) insects (E) protist (F) barnacles (G) reptiles (H) rabbit
Solution:
G