A Patient Was Diagnosed with Tinea Corporis and Given Topical

A patient was diagnosed with tinea corporis and given topical ketoconazole.The patient tells the primary care nurse practitioner (NP) that the infection is not getting better.The NP should:

A) prescribe griseofulvin.
B) prescribe oral ketoconazole.
C) obtain a culture of the infection site.
D) recommend 3 more weeks of treatment with the topical medication.