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: Pediatrics
[{'content': 'Intrauterine growth retardation can be caused by all except – \nSelect and explain. \nA. Nicotine, B. lcohol, C. Propranolol, D. Phenothiazine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Causes of LUG (small for date)\nEnvironmental\n\nEthnic, racial and geographic\nSocial and economic status\nNutritional\n\nMaternal\n\nThe short stature of mother\nPrimi or grand multipara\nYoung / adolescent mother (below 20 years)\nLow pre-pregnancy weight\nSmoking and tobacco or alcohol abuse\nMaternal illness : anemia, heart disease, malaria\nComplication of pregnancy : pre-eclampsia, hypertension\nPrevious similar baby\n\nPlacental factors\n\nDisorders of implantation of the placenta, abruptio placenta\nextensive placental infarcts and structural or function\nabnormalities of the placenta. Single umbilical artery\nvascular thrombosis also predispose to the birth of a small baby\n\nFetal\xa0factors\n\nFirstborn babies are generally smaller\nGenetics or chromosomal aberrations\nTwining and multiple pregnancies\nIntrauterine infections\n\nNote:-\xa0\n\nIn CRF there is hypertension which is one of the causes of IUGR.\nPropranolol also causes IUGR.', 'role': 'assistant'}]