This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Medicine
Pontine harmorrhage is characterized by 
Select and explain. 
A. Pin point pupil reacting to light, B. Hypothermia, C. Hemisensory disturbances, D. Hypotension
A: Pin point pupil reacting to light
Answer: A: Pin point pupil reacting to light 
Explanation: (A) Pin point pupil reacting to light # Pontine hemorrhage (sudden onset, pinpoint pupils, loss of reflex eye movements and corneal responses, ocular bobbing, posturing, hyperventilation, and excessive sweating);