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: Surgery
Erythema chronicum migrans is seen in ? 
Select and explain. 
A. Lyme's disease, B. Glucagonoma, C. Gastrinoma, D. Phaeochromocytoma
A: Lyme's disease
Answer: A: Lyme's disease 
Explanation: 'a' i.e. Lyme's disease