The following are multiple choice questions (with answers) about medical knowledge.   **Question:** When instrument with primary cutting edge is perpendicular to blade then:   (A) 1st digit of 4 digit formula omitted.   (B) 2nd digit of 4 digit formula omitted.   (C) 3rd digit of 4 digit formula omitted.   (D) 4th digit of 4 digit formula omitted.
['(B) 2nd digit of 4 digit formula omitted. <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 1st digit of 4 digit formula omitted. \n (B) 2nd digit of 4 digit formula omitted. \n (C) 3rd digit of 4 digit formula omitted. \n (D) 4th digit of 4 digit formula omitted. <> possible answers', '  When instrument with primary cutting edge is perpendicular to blade then: <> context@']