mrcem2-0928

A 57 year old type 2 diabetic presents to the emergency department with redness on his foot. Upon examination, a foot ulcer measuring 1 cm in diameter is observed, exposing the superficial subcutaneous tissues. There is approximately 1 cm of erythema surrounding the ulcer and some pus at the base. The patient is not running a fever and appears to be in good overall health. It is determined that antibiotics should be initiated. The patient has no known allergies to medications. Which antibiotic would be the most suitable option?