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': 'A small boy who is brought to the emergency department by his parents is found to have a spiral fracture of the femur, with a variety of ecchymoses. What is the most likely cause of the injuries – \nSelect and explain. \nA. Automobile hit – and – run accident, B. Fall from a tree, C. Child abuse, D. Fall from a bicycle', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The fracture can occur in all the four options given in questions.\nBut, a variety of ecchymoses suggests child abuse -\n\n"Bruises are the most common manifestation of child abuse and may be found on anybody surface".', 'role': 'assistant'}]