This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
The most common fetal response to acute hypoxia is: 
Select and explain. 
A. Tachycardia, B. Tachypnea, C. Bradycardia, D. Ventricular Arrhythmia
C: Bradycardia
Answer: C: Bradycardia 
Explanation: The initial response of the normal fetus to acute hypoxia or asphyxia is bradycardia. Ref: Rudolph's Pediatrics By Colin David Rudolph, 21st Edition, Page 71; Fetal and Neonatal Neurology, 4th Edition, Page 493; Oxford Desk Reference: Obstetrics and Gynaecology By Sarabatnam Arulkumaran, Lesley Regan, Aris Papageorghiou, David Farquharson, Ash Monga - Oxford University Press, 01-Aug-2011 - Medical, Page 380; Oxygen Sensing: Responses and Adaptation to Hypoxia By Gregg L. Semenza, Nanduri R. Prabhakar, Sukhamay Lahiri, Gregg L. Semenza, Nanduri R. Prabhakar, Page 209; Fetal and Neonatal Brain Injury: Mechanisms, Management and the Risks of Practice By David Kendal Stevenson, William E. Ben?tz, Page 233