This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Facultative organisms constituting female vaginal flora include all except 
Select and explain. 
A. Diphtheroids, B. Streptococci, C. Lactobacilli, D. E. coli
C: Lactobacilli
Answer: C: Lactobacilli 
Explanation: Lacto bacilli is main organism in vaginal flora.
It is not facultative.