A 26-year-old woman presents with vaginal pruritus, thick white cottage cheese-like discharge, and vulvar erythema. KOH prep shows budding hyphae. What is the most appropriate first-line treatment?
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A
Metronidazole 500 mg PO BID for 7 days
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B
Doxycycline 100 mg PO BID for 14 days
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C
Oral fluconazole 150 mg once or topical azole for 3–7 days
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D
Clindamycin vaginal cream for 7 days