<prompt> Which of the following statements is true -Chronic myeloid leukemia occurs beyond 50 years of ageHairy cell leukemia in less than 50 years has a good prognosisAcute lymphoid leukemia in less than 1 yearChronic lymphocytic leukemia occurs in less than 50 years of age  <response>: . Acute lymphoid leukemia in less than 1 year 