This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
A patient with ptosis presents with retraction of the ptotic eye lid on chewing. This represents - 
Select and explain. 
A. Marcus Gunn Jaw winking sydrome, B. Third nerve misdirection syndrome, C. Abducent palsy, D. Occulomotor palsy
A: Marcus Gunn Jaw winking sydrome
Answer: A: Marcus Gunn Jaw winking sydrome 
Explanation: Also known as Congenital synkinetic ptosis retraction of the ptotic eye lid on chewing with stimulation of ipsilateral pterygoid muscle. Ref : Ak khurana 6th edition pg no 379