input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A 9-year-old boy is brought in by his mother because of bruising on his torso and limbs. The patient’s mother denies any other symptoms and says he is otherwise healthy. Physical examination shows multiple petechiae and bruising on the torso and extremities bilaterally. The remainder of the physical exam is unremarkable. A complete blood count is normal. His coagulation profile reveals: Prothrombin time (PT) 12 sec Activated partial thromboplastin time (aPTT) 60 sec Which of the following is the most likely diagnosis in this patient?   (A) Acute lymphoblastic leukemia   (B) Immune thrombocytopenic purpura   (C) Von Willebrand disease   (D) Hemophilia A
output: ['(C) Von Willebrand disease <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Acute lymphoblastic leukemia  (B) Immune thrombocytopenic purpura  (C) Von Willebrand disease  (D) Hemophilia A <> possible answers', '  A 9-year-old boy is brought in by his mother because of bruising on his torso and limbs. The patient’s mother denies any other symptoms and says he is otherwise healthy. Physical examination shows multiple petechiae and bruising on the torso and extremities bilaterally. The remainder of the physical exam is unremarkable. A complete blood count is normal. His coagulation profile reveals:\nProthrombin time (PT) 12 sec\nActivated partial thromboplastin time (aPTT) 60 sec\nWhich of the following is the most likely diagnosis in this patient? <> context']