You will be given a definition of a task first, then some input of the task.
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: Adult sponges produce eggs and sperm., Fact2: Sponges are the most primitive multicellular animals., Question: The most primitive multi-cellular animals produce what? (A) Electrical energy (B) eggs and sperm (C) harmful substances (D) scarce resources (E) Organic compounds (F) Chemical energy (G) fur and fat (H) aerobic capacity
Output:
B