The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Most difficult maxillary tooth to anaesthetize by infiltration is :   (A) 1st molar   (B) 1st premolar   (C) Canine   (D) 3rd molar
['(A) 1st molar <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) 1st molar \n (B) 1st premolar \n (C) Canine \n (D) 3rd molar <> possible answers', '  Most difficult maxillary tooth to anaesthetize by infiltration is : <> context@']