This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Obs), Subject name: Gynaecology & Obstetrics
[{'content': "Regarding Hyperemesis gravidarum false is: \nSelect and explain. \nA. Allergic basis is suggested., B. Hormonal imbalance may be a cause., C. Small heart is an incidental finding., D. May show manifestations of Wernicke's encephalopathy.", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. C. Small heart is an incidental findingSmall heart is a constant finding; there may be subendocardial hemorrhage; small hemorrhages in the hypothalamic region giving the manifestations of Wernicke's encephalopathy. Etiology includes hormonal, psychogenic, dietetic and allergic basis.", 'role': 'assistant'}]