Please choose the correct answer to the question: Which statement describes how muscles work to allow a person to extend an arm from a curled position by straightening the elbow?

Answer1: Both the biceps and triceps contract. Answer2: Both the biceps and the triceps relax. Answer3: The triceps contract and the biceps relax. Answer4: The biceps contract and the triceps relax.

Answer format: answer1/answer2/answer3/answer4