The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Cause of apical periodontitis is/are:   (A) Sequel of pulpal diseases   (B) Wedging of foreign object between the teeth   (C) High points in restoration   (D) All of the above
['(D) All of the above <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Sequel of pulpal diseases \n (B) Wedging of foreign object between the teeth \n (C) High points in restoration \n (D) All of the above <> possible answers', '  Cause of apical periodontitis is/are: <> context@']