The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Tip of ultrasonic scaler after usage, cleaned by   (A) Under running H2O for 2 min   (B) chemical cleaning   (C) Autoclave   (D) Not Recalled
['(C) Autoclave <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Under running H2O for 2 min \n (B) chemical cleaning \n (C) Autoclave \n (D) Not Recalled <> possible answers', '  Tip of ultrasonic scaler after usage, cleaned by <> context@']