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").

Fact1: Introns are regions that do not code for proteins., Fact2: Introns are found in eukaryotes., Question: what have regions that do not code for proteins? (A) genus (B) barnacles (C) graptolites (D) roots (E) ferns (F) animals (G) eukaryotes (H) sensory neurons
G