This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
Erythema Chronicum Migrans is feature of 
Select and explain. 
A. Lyme disease, B. Leptospirosis, C. Acute rheumatic fever, D. Pancreatic Adenocarcinoma
A: Lyme disease
Answer: A: Lyme disease 
Explanation: Hallmark of primary Lyme disease is Erythema Migrans: OMacular expanding erythematous lesion, central clearing. OBegins one month after the tick bite. OMean diameter 15 cm. Painless, can cause itching. Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 378-380