This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: mycology, Subject name: Microbiology
How many episodes of vulval candidiasis per year are 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(or) *At least three episodes unrelated to antibiotic therapy occur within one year Ref : Ananthanarayana textbook of Microbiology 9th edition Pgno : 612