PLE-3212

A 35-year-old female, who cultivates a variety of roses in her backyard, presented to you with multiple small skin lesions in her right upper arm and back. The said lesions exhibit ulcerations, erythema, and some pustules. She is afebrile but complains of mild pain in her right elbow. Given the said history and physical examination, you decided to start her on which of the following antimicrobial drugs?