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
All of the following cranial nerves contain somatic efferent fibres except: 
Select and explain. 
A. Trochlear, B. Facial, C. Abducens, D. Occulomotor
B: Facial
Answer: B: Facial 
Explanation: Facial nerve contains special branchial efferents, not somatic efferents