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: Most mollusks have shells., Fact2: Mussels are bivalve mollusks., Question: What do most mussles have? (A) Epidermis (B) ice (C) shells (D) snow (E) fur (F) names (G) a cuticle (H) alveoli
Solution:
C