The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Lefort 1 osteotomy essentially involves osteotomy of how many bones?   (A) 2   (B) 3   (C) 4   (D) 5
['(D) 5 <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 2 \n (B) 3 \n (C) 4 \n (D) 5 <> possible answers', '  Lefort 1 osteotomy essentially involves osteotomy of how many bones? <> context@']