For which client is amoxicillin contraindicated?

A. A client with a urinary tract infection: Amoxicillin is commonly used to treat urinary tract infections caused by susceptible bacteria. It is effective in eradicating the infection and is not contraindicated in this scenario. B. A client with seasonal allergies: Seasonal allergies are not related to penicillin hypersensitivity. Amoxicillin can be safely administered to clients with environmental allergies, provided there is no drug allergy. C. A client who is lactose intolerant: Amoxicillin formulations may contain small amounts of lactose as an inactive ingredient. Lactose intolerance typically causes mild gastrointestinal discomfort, not severe reactions, and is not a strict contraindication. D. A client with a penicillin allergy: Amoxicillin is a penicillin-class antibiotic. A history of hypersensitivity can result in mild to severe allergic reactions, including anaphylaxis. Administration is contraindicated in clients with a known penicillin allergy.