Q: 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: Muscles can only contract., Fact2: Arm day hits the bicep, tricep and forearm muscles., Question: what can only contract? (A) resistance (B) lungs (C) nerves (D) Bend (E) triceps (F) strong (G) mechanical (H) four limbs
A:
E