The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Periapical bone resorption occurs due to:   (A) IL-1 alpha   (B) TNF alpha   (C) Both   (D) None
['(C) Both <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) IL-1 alpha \n (B) TNF alpha \n (C) Both \n (D) None <> possible answers', '  Periapical bone resorption occurs due to: <> context@']