This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexually Transmitted Infections, Subject name: Dental
A female patient is diagnosed with primary herpes genitalis. Which of the following should be the treatment advice? 
Select and explain. 
A. "Apply one applicator of Terconazole intravaginally at bedtime for 7 days.", B. "Apply one applicator of Sulconazole intravaginally at bedtime for 7 days.", C. Acyclovir 200mg ; five times a day for 7 days.", D. "Apply Acyclovir twice daily by massaging it gently into the lesions for 3 days."
C: Acyclovir 200mg ; five times a day for 7 days."
Answer: C: Acyclovir 200mg ; five times a day for 7 days." 
Explanation: A patient with primary herpes genitalis : Acyclovir 200mg ; 5 times a day for 7 days Or 400mg, 3 times a day for 7 days. Terconazole and Tioconazole are used to treat vulvovaginal candidiasis. Sulconazole nitrate is used to treat tinea versicolor.