Due to Which Action Can the Pectoralis Minor Be Considered

Multiple Choice

Due to which action can the pectoralis minor be considered to be an accessory muscle of respiration?

A) protraction (abduction) of the scapula at the scapulocostal joint
B) depression of the scapula at the scapulocostal joint
C) elevation of ribs three through five at the sternocostal and costospinal joints
D) downward rotation of the scapula at the scapulocostal joint