The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Heavy forces on periodontal ligament causes:   (A) Hyalinization   (B) Osteoclastic activity around tooth   (C) Osteoblastic activity around tooth   (D) Crest bone resorption
['(A) Hyalinization <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Hyalinization \n (B) Osteoclastic activity around tooth \n (C) Osteoblastic activity around tooth \n (D) Crest bone resorption <> possible answers', '  Heavy forces on periodontal ligament causes: <> context@']