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': 'All of the following statements are true about shock except _________ \nSelect and explain. \nA. Cardiogenic shock is the most common cause of shock in children, B. Crystalloids are preferred than colloids, C. Extracorporeal membrane oxygenation is given for refractory shock, D. Multiple organ Dysfunction Syndrome (MODS) is an important complication of shock', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hypovolemic shock is the most common cause of shock in children.', 'role': 'assistant'}]