This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neonatal Resuscitation, Subject name: Pediatrics
It is used for all EXCEPT: 
Select and explain. 
A. To check for apnea, B. To confirm presence of cyanosis, C. To differentiate cardiac from non-cardiac cause of cyanosis, D. In delivery room for resuscitation of neonate
C: To differentiate cardiac from non-cardiac cause of cyanosis
Answer: C: To differentiate cardiac from non-cardiac cause of cyanosis 
Explanation: Clip depicts Pulse oximeter- can't differentiate cardiac from non-cardiac cause of cyanosis Uses- To check for apnea To confirm presence of cyanosis In delivery room for resuscitation of neonate