The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Electromyography is used to:   (A) To study muscle activity   (B) Determine class II malocclusion   (C) Determine the centric relation   (D) Determine the centric occlusion
['(A) To study muscle activity <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) To study muscle activity \n (B) Determine class II malocclusion \n (C) Determine the centric relation \n (D) Determine the centric occlusion <> possible answers', '  Electromyography is used to: <> context@']