This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Identification, Subject name: Forensic Medicine
[{'content': 'Ossification centre Calcaneum appears in \nSelect and explain. \nA. 3rd month, B. 5th month, C. 7th month, D. 9th month', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ossification centres Foot calcaneum: 5 months of JULY Talus: 7 months Cuboid: 9 months Navicular: 1 year Cuneiforms: 1 to3 years Ref: FORENSIC MEDICINE AND TOXICOLOGY Dr PC IGNATIUS THIRD EDITION PAGE 92', 'role': 'assistant'}]