A Child Had an Aortic Stenosis Defect Surgically Repaired 6

A child had an aortic stenosis defect surgically repaired 6 months ago.Which antibiotic prophylaxis is indicated for an upcoming tonsillectomy?

A) No antibiotic prophylaxis is necessary.
B) Amoxicillin is taken orally 1 hour before the procedure.
C) Oral penicillin is given for 7 to 10 days before the procedure.
D) Parenteral antibiotics are administered for 5 to 7 days after the procedure.