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
[{'content': 'Most impoant indicator of successful neonatal resuscitation: \nSelect and explain. \nA. Color change, B. Improved air entry, C. Increase in hea rate, D. Bilateral chest movements', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Most impoant indicator of successful neonatal resuscitation - Increase in hea rate.', 'role': 'assistant'}]