The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Radiograph of a periodontal ligament of a tooth which has lost its antagonist shows:   (A) Widening of the PDL space   (B) Narrowing of PDL space   (C) Increased density   (D) Sclerotic change
['(B) Narrowing of PDL space <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Widening of the PDL space \n (B) Narrowing of PDL space \n (C) Increased density \n (D) Sclerotic change <> possible answers', '  Radiograph of a periodontal ligament of a tooth which has lost its antagonist shows: <> context@']