The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Unique characteristic of attached gingiva in children:   (A) Interdental clefts.   (B) Retrocuspid papilla.   (C) Both.   (D) Stillman's cleft.
['(C) Both. <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Interdental clefts. \n (B) Retrocuspid papilla. \n (C) Both. \n (D) Stillman's cleft. <> possible answers", '  Unique characteristic of attached gingiva in children: <> context@']