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: ENT
Stimulation of posterior semicircular canal produces - 
Select and explain. 
A. Horizontal nystagmus, B. Vertical nystagmus, C. Rotatory nystagmus, D. None of the above
B: Vertical nystagmus
Answer: B: Vertical nystagmus 
Explanation: None