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: Ophthalmology
Which organism is considered as normal flora conjunctiva? 
Select and explain. 
A. B.Proteus, B. Pseudomonas, C. E coli, D. Corynebacterium xerosix
D: Corynebacterium xerosix
Answer: D: Corynebacterium xerosix 
Explanation: Answer- D. Corynebacterium xerosix