A nurse is advising a 15-year-old boy on managing acne during puberty. Which of the following recommendations is most appropriate?

A. Avoiding all oily foods is not necessary, as dietary factors have varying effects on acne; instead, moderation is key. B. Popping pimples can lead to scarring, infection, and further inflammation, making this an inappropriate recommendation for acne management. C. Using strong astringents can irritate the skin and worsen acne; gentle skin care is more effective for maintaining healthy skin. D. Washing the face with a gentle cleanser twice a day helps to remove excess oil and dirt without irritating the skin, which is the most appropriate recommendation for managing acne during puberty.