This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
How many episodes of vulval candidiasis per year were needed for diagnosis of recurrent vulvovaginal candidiasis? 
Select and explain. 
A. 1, B. 2, C. 3, D. 4
D: 4
Answer: D: 4 
Explanation: Vulvovaginal candidiasis:Vulvovaginal candidiasis is considered recurrent when at least four specific episodes occur in one year At least three episodes unrelated to antibiotic therapy occur within one year(Ref: www.aafp.org )