What Are the Prime Movers in Shoulder Flexion Against Gravity

What are the prime movers in shoulder flexion against gravity?
1) upper pectoralis major
2) latissimus dorsi
3) anterior deltoid
4) posterior deltoid
5) lower pectoralis major

A) upper pectoralis major, anterior deltoid
B) upper pectoralis major, latissimus dorsi, anterior deltoid, posterior deltoid
C) latissimus dorsi, posterior deltoid
D) posterior deltoid, lower pectoralis major