Scenario: An 11 year old boy falls down the stairs. A physician examines a radiograph of the boy's shoulder region.
Question: If the structure indicated by the letter B is fractured, which of the following structures is most likely injured?
A. Musculocutaneous nerve
B. Radial nerve
C. Deep brachial artery
D. Posterior humeral circumflex artery
E. Scapular circumflex artery