An adult patient with a history of bacterial endocarditis requires prophylactic administration of antibiotics prior to removal of teeth. Indicate the pre-operative regimen:**
A. Amoxicillin 2 gram one hour before operation orally
B. Penicillin 250 mg orally six hours before operation
C. Tetracycline 250-500 mg orally 2 hours before treatment
A. Amoxicillin 2 gram one hour before operation orally
B. Penicillin 250 mg orally six hours before operation
C. Tetracycline 250-500 mg orally 2 hours before treatment