The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Rotation speed of profile instruments   (A) 50-100 RPM   (B) 100-3000 RPM   (C) 300-500 RPM   (D) 150-300 RPM
['(D) 150-300 RPM <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 50-100 RPM \n (B) 100-3000 RPM \n (C) 300-500 RPM \n (D) 150-300 RPM <> possible answers', '  Rotation speed of profile instruments <> context@']