The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Hidden X suture proves to be a novel suturing technique for:   (A) Alveolar ridge preservation   (B) Apical repositioning flap   (C) Coronal repositioning flap   (D) Papillae repositioning flap
['(A) Alveolar ridge preservation <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Alveolar ridge preservation \n (B) Apical repositioning flap \n (C) Coronal repositioning flap \n (D) Papillae repositioning flap <> possible answers', '  Hidden X suture proves to be a novel suturing technique for: <> context@']