The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The first instrument used on the facial surfaces of gingiva while gingivectomy is:   (A) Orban's knife   (B) Kirkland's knife   (C) BP blade with No. 11 blade   (D) BP blade with No. 12 blade
["(B) Kirkland's knife <> answer", 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', "(A) Orban's knife \n (B) Kirkland's knife \n (C) BP blade with No. 11 blade \n (D) BP blade with No. 12 blade <> possible answers", '  The first instrument used on the facial surfaces of gingiva while gingivectomy is: <> context@']