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
[{'content': 'Marcus gunn jaw winking phenomenon due to relation between which cranial nerves- \nSelect and explain. \nA. VII + VIII, B. III + V, C. V + VII, D. III + VI', 'role': 'user'}, {'content': "Answer: B \nExplanation: *Marcus Gunn phenomenon (a.k.a. Marcus Gunn Jaw-Winkingor Trigemino-oculomotor Synkineses) Ref: Merritt's neurology p.603", 'role': 'assistant'}]