This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'External auditory canal atresia has been associated with all of the following except- \nSelect and explain. \nA. Low Birth Weight, B. Intrauterine infections, C. Intrauterine toxins, D. Polyhydramnios', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Polyhydramnios External auditory canal atresiao The precise etiology of the failure of EAC canalization is not known.o Associations have been postulated between EACA and low birth weight, intrauterine trauma, toxins, infection.o Genetic defects are being identified for several craniofacial anomalies.", 'role': 'assistant'}]