This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: ENT
Which cranial nerves affected in Moebius syndrome? 
Select and explain. 
A. 5, 6 CN, B. 5, 7 CN, C. 6, 7 CN, D. 6, 9 CN
C: 6, 7 CN
Answer: C: 6, 7 CN 
Explanation: Moebius syndrome - Rare neurological disorder, congenital oculofacial paralysis Congenital defect - paralysis of 6th and 7th CN Mask like face - expressionless Unable to close eyes- corneal ulceration Strabismus