Given the task definition and input, reply with output. 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: Sponges are a source of food for many species of fish., Fact2: All sea turtle eat marine animals such as sponges, marine worms and molluscs., Question: What shares a food source with fish? (A) Energy (B) Energy. (C) animals (D) Chemical energy (E) phytoplankton (F) rocks (G) sea turtles (H) the Sun
G