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
Distichiasis is characterised by all of the following except: 
Select and explain. 
A. An extra row of cilia is present, B. Normal row of cilia is present anterior to the openings of the meibomian glands, C. Extra row of cilia occupies a position posterior to the openings of the meibomian glands, D. Cilia of the extra row may rub the cornea
C: Extra row of cilia occupies a position posterior to the openings of the meibomian glands
Answer: C: Extra row of cilia occupies a position posterior to the openings of the meibomian glands 
Explanation: Ans. Extra row of cilia occupies a position posterior to the openings of the meibomian glands