This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Musculoskeletal  disorders, Subject name: Pediatrics
[{'content': 'Phocomelia is \nSelect and explain. \nA. Absence of long bones, B. Absence of brain, C. Reduplication of bones, D. Absence of hea', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Phocomelia is absence of long bones It occurs due to thalidomide consumption during pregnancy', 'role': 'assistant'}]