Lifting a 25-Lb Barbell by Flexing Your Forearm Requires ________

Multiple Choice

Lifting a 25-lb barbell by flexing your forearm requires ________.

A) the biceps brachii to contract concentrically and the triceps brachii to contract eccentrically
B) eccentric contraction of both the biceps brachii and triceps brachii
C) the biceps brachii to contract eccentrically and the triceps brachii to contract concentrically
D) Isometric contraction of the biceps brachii and concentric contraction of the triceps brachii