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: Medicine
APGAR scale in infant measures 
Select and explain. 
A. Respiratory, Neurological, and Circulatory system, B. Respiratory, Neurologic, renal system, C. Neurological, renal, digestive system, D. Respiratory, Neurological and digestive system
A: Respiratory, Neurological, and Circulatory system
Answer: A: Respiratory, Neurological, and Circulatory system 
Explanation: None