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: Bone is less flexible than cartilage but stronger., Fact2: Articular cartilage is the cartilage that covers the bone and the joint areas., Question: bone is stronger but less what than the material that covers it (A) surface (B) weight (C) flexible (D) key element (E) damaging (F) viscous (G) fluid (H) money
Solution:
C