Which of the following is a true statement about skin care for older adults?

A. A ram's-horn nail should be cut to give a smooth, rounded edge: Ram’s-horn nails (onychogryphosis) are thick, curved, and difficult to trim safely. Cutting them without specialized training may cause injury or infection, so referral to a podiatrist is recommended. B. Onychomycosis is quickly eradicated with antifungal creams or powders: Fungal nail infections are persistent and difficult to treat, often requiring long-term systemic antifungal therapy. Topical creams or powders are usually ineffective as sole treatment. C. Maintaining oral hydration may reduce the incidence of xerosis: Xerosis, or dry skin, is common in older adults due to decreased sebaceous gland activity. Adequate oral hydration helps support skin moisture balance. D. A licensed practical nurse is qualified to care for the feet of a client with diabetes: Foot care for diabetic clients requires advanced assessment skills. Specialized professionals like registered nurses or podiatrists are typically responsible, not LPNs working independently.