This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Which of the following is not present in posterior
triangle of neck? 
Select and explain. 
A. Phrenic nerve, B. Subclavian nerve, C. External jugular vein, D. Hypoglossal nerve
D: Hypoglossal nerve
Answer: D: Hypoglossal nerve 
Explanation: None