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: Medicine
Treatment of choice of thoracic actinomycosis is: 
Select and explain. 
A. Amphotericin B, B. Cotrimoxazole, C. Penicillin, D. Itraconazole
C: Penicillin
Answer: C: Penicillin 
Explanation: Ans. is 'c' Penicillin Actinomycosis occur at different sites such as oro cervicofacial, thoracic, abdominal and pelvic.The drug of choice for all types of actinomycosis is penicillin.