Explain which type of leukemia he is most likely to have

One of your patients is a 5 year old boy who was diagnosed with leukemia 3 months ago. Although he is receiving excellent care by a pediatric hematologist/oncologist, his parents trust you since you have taken care of him since he was born. They are very anxious and have many questions
Initial Post: Explain which type of leukemia he is most likely to have, its pathophysiology, how he contracted it, and his prognosis. treatment options for this child