The following are multiple choice questions (with answers) about medical knowledge.   **Question:** In treating a tooth with a nonvital pulp and a sinus, the sinus should be treated as follows:   (A) No special treatment   (B) Cauterisation   (C) Curettage of sinus   (D) Use of cautery to eliminate the sinus
['(A) No special treatment <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) No special treatment \n (B) Cauterisation \n (C) Curettage of sinus \n (D) Use of cautery to eliminate the sinus <> possible answers', '  In treating a tooth with a nonvital pulp and a sinus, the\nsinus should be treated as follows: <> context@']