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: Dental
[{'content': "A major criterion to differentiate between true Angle's Class III and a pseudo Angle's Class III is \nSelect and explain. \nA. Degree of anterior cross bite, B. Presence of bilateral cross bite, C. Existence of a forward shift of the mandible during closure, D. Occlusal relationship between maxilla", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]