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
Relapsing polyneuropathy is seen in - 
Select and explain. 
A. Refsums disease, B. Acute intermittent porphyria, C. Diabetes mellitus, D. None of the above
B: Acute intermittent porphyria
Answer: B: Acute intermittent porphyria 
Explanation: None