The following are multiple choice questions (with answers) about medical knowledge.   **Question:** One day after complete mouth extraction, blue black spots are seen on the neck of the patients. These spots indicate:   (A) Thrombocytopenic purpura   (B) Postoperative ecchymosis   (C) Impaired blood circulation   (D) Cellulitis
['(B) Postoperative ecchymosis <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Thrombocytopenic purpura \n (B) Postoperative ecchymosis \n (C) Impaired blood circulation \n (D) Cellulitis <> possible answers', '  One day after complete mouth extraction, blue black spots are seen on the neck of the patients. These spots indicate: <> context@']