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: Forensic Medicine
[{'content': 'Definite diagnosis of pregnancy include all, except: Kerala 09; 11 \nSelect and explain. \nA. Fetal hea sound, B. Palpation of fetal pas, C. Fetal skeleton on X-ray, D. hCG in blood', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. hCG in blood', 'role': 'assistant'}]