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
Impotence is a feature of which of the following- 
Select and explain. 
A. Multiple sclerosis, B. Poliomyelitis, C. Amyotropic lateral sclerosis, D. Meningitis
A: Multiple sclerosis
Answer: A: Multiple sclerosis 
Explanation: None