Sensory supply of from external auditory meatus: (A) Pterygomandibular ganglion, (B) Geniculate ganglion, (C) Facial nerve nucleus, (D) Auriculotemporal nerve
Answer is D. The skin lining the anterior half of the meatus is supplied by the auriculotemporal nerve, and that lining the posterior half, by the auricular branch of the vagus. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3, 6th edition 368