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': 'Fetal anemia is seen in: \nSelect and explain. \nA. Early deceleration, B. Late deceleration, C. Variable deceleration, D. Sinusoidal pattern', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Sinusoidal pattern', 'role': 'assistant'}]