Which of the following is a topical antifungal ointment?

Nystatin and ketoconazole are both topical antifungal agents that are commonly used to treat fungal infections of the skin and mucous membranes.

Nystatin is particularly effective against Candida species and is often used to treat oral thrush and cutaneous candidiasis. It is applied directly to the affected area, allowing it to exert its antifungal effects locally.

Ketoconazole, on the other hand, is a broad-spectrum antifungal that can be used topically to treat various skin fungal infections, including tinea infections. It disrupts the synthesis of ergosterol, an essential component of fungal cell membranes, leading to cell death.

Fluconazole, while an effective antifungal medication, is typically administered systemically rather than topically. It is often used for more systemic fungal infections and has less direct application in local topical treatments.

Given the characteristics and uses of these medications, the inclusion of both Nystatin and Ketoconazole as topical antifungal ointments makes the combined choice of both (A and B) the correct answer.