input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** An average diameter of apical foramen in patients of age above 55 years is   (A) 400 micrometer   (B) 502 micrometer   (C) 681 micrometer   (D) 602 micrometer
output: ['(C) 681 micrometer <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 400 micrometer  (B) 502 micrometer  (C) 681 micrometer  (D) 602 micrometer <> possible answers', '  An average diameter of apical foramen in patients of age above 55 years is <> context']