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 are seen in the floor of 3rd ventricle except? 
Select and explain. 
A. Infundibulum, B. Oculomotor nerve, C. Mammillary body, D. Optic chiasmaFouh Ventricle
B: Oculomotor nerve
Answer: B: Oculomotor nerve 
Explanation: B i.e. Occulomotor Nerve