A 17-year-old boy is taken to the emergency room after being struck on the lateral aspect of the left shoulder by a baseball bat during a gang fight. Examination reveals a fracture of the surgical neck of the left humerus, displaced bone fragments piercing the quadrangular space of the shoulder, and deep blood accumulation around the fracture. Which of the following blood vessels was most likely severed?a. Cephalic vein
b. Circumflex scapular artery
c. Posterior circumflex humeral artery
d. Profunda brachii artery
e. Subscapular artery