This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mechanical Injuries, Subject name: Forensic Medicine
[{'content': "Waddell's triad of injuries is seen in: \nSelect and explain. \nA. Adult pedestrian struck by motor vehicles, B. Pediatric pedestrian struck by motor vehicles, C. Front seat passengers of motor vehicles, D. Driver of a motor vehicle", 'role': 'user'}, {'content': "Answer: B \nExplanation: Waddell's triad - It is a pattern of injury seen in pedestrian children who are struck by motor vehicles. - It comprises of fractured femoral shaft, intra-thoracic/intra-abdominal injuries and contralateral head injury. - Mechanism of injury is an initial impact causing injury to the pelvis and femur instead of the knees and tibia followed by the chest and abdomen (grill, fender or hood). - Then the child is thrown on the ground and sustaining injury to the opposite side of the head", 'role': 'assistant'}]