<prompt> Which among the following is the most common tumor associated with neurofibromatosis in a child?Juvenile myelomonocytic leukemiaAcute lymphoblastic leukemiaAcute monocytic leukemiaAcute myeloid leukemia  <response>: Patients with neurofibromatosis type 1 and Noonan syndrome have a predilection for JMML, since they have germline mutations involved in RAS signaling. AML and ALL are associated with DOWN syndrome. 