The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Common sign of occlusal trauma (TFO) is   (A) Tooth mobility   (B) Fractures of cusps   (C) Resorption of alveolar ridge   (D) Widening of P.D ligament
['(A) Tooth mobility <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Tooth mobility \n (B) Fractures of cusps \n (C) Resorption of alveolar ridge \n (D) Widening of P.D ligament <> possible answers', '  Common sign of occlusal trauma (TFO) is <> context@']