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: Medicine
Most common cause of LMN facial palsy is - 
Select and explain. 
A. Disseminated sclerosis, B. Bell's palsy, C. DM, D. Leprosy
B: Bell's palsy
Answer: B: Bell's palsy 
Explanation: None