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: Surgery
[{'content': 'Posterior glenohumeral instability can be tested by which of the following tests? \nSelect and explain. \nA. Crank Test, B. Fulcrum Test, C. Jerk Test, D. Sulcus Test', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Apprehension Test (Crank Test) and Fulcrum Test is used for Anterior shoulder instability Sulcus Test is used for Inferior shoulder instability and Jerk Test is for Posterior shoulder instability', 'role': 'assistant'}]