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: Gynaecology & Obstetrics
[{'content': 'Which is most significant finding in cardiotocography for detection of fetal hypoxia : \nSelect and explain. \nA. Late deceleration, B. Variable deceleration, C. Sinusoidal deceleration, D. Early deceleration', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Late deceleration', 'role': 'assistant'}]