This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S., Subject name: Pediatrics
[{'content': 'Late onset hemorrhagic disease of newborn is characterized by all of the following features except: \nSelect and explain. \nA. Usually occurs in cow milk fed babies, B. Onset occurs at 4-12 weeks of age, C. Intracranial hemorrhage can occur, D. Intramuscular vitamin K prophylaxis at birth has a protective role', 'role': 'user'}, {'content': 'Answer: A \nExplanation: a. Usually occurs in cow milk fed babies(Ref: Nelson\'s 20/e p 2384)"Hemorrhagic disease of newborn is more common in breast fed infants because breast milk is poor in vitamin K".', 'role': 'assistant'}]