A patient of known valvular disease requires dental extraction. Pretreatment prophylaxis should be given with:: (A) Tetracycline 1000mg. one hr before surgery, (B) Amoxicillin 3g orally one hour before, (C) Amoxicillin 1g IM one hour before, (D) Benzyl penicillin 12 lakh units 1 hour before
Answer is B. None