input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A child underwent a tonsillectomy at 6 years of age with no complications. He underwent a preoperative screening for bleeding at the age of 12 years before an elective laparotomy, and was found to have a prolonged partial thromboplastin time, but normal prothrombin time. There was no family history of bleeding. The patient is likely to have acquired Vitamin K deficiency:   (A) Acquired Vitamin K deficiency   (B) Acquired liver disease   (C) Factor XII deficiency   (D) Mild hemophilia A
output: ['(C) Factor XII deficiency <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Acquired Vitamin K deficiency  (B) Acquired liver disease  (C) Factor XII deficiency  (D) Mild hemophilia A <> possible answers', '  A child underwent a tonsillectomy at 6 years of age with no complications. He underwent a preoperative screening for bleeding at the age of 12 years before an elective laparotomy, and was found to have a prolonged partial thromboplastin time, but normal prothrombin time. There was no family history of bleeding. The patient is likely to have acquired Vitamin K deficiency: <> context']