The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Korffs fibres are seen in:   (A) Mantle dentin   (B) Secondary dentin   (C) Reactionary dentin   (D) Indeed dermal tubules
['(A) Mantle dentin <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Mantle dentin \n (B) Secondary dentin \n (C) Reactionary dentin \n (D) Indeed dermal tubules <> possible answers', '  Korffs fibres are seen in: <> context@']