<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 5-year-old girl presents for a routine checkup. The patients parents say she has been looking pale and tired lately. Her family history is unremarkable. Upon physical examination, several bruises are seen, as well as petechial bleeding on her limbs. A complete blood count shows leukocytosis with severe anemia and thrombocytopenia. A peripheral blood smear shows 35 blasts. Ultrasonography of the abdomen shows hepatosplenomegaly and a chest radiograph reveals a mediastinal mass. Which of the following is the most likely diagnosis in this patient?? A: Acute lymphoblastic leukemia, B: Acute myeloid leukemia, C: Chronic lymphocytic leukemia, D: Aplastic anemia, E: Chronic myeloid leukemia,  <response>: Based on the description in the question stem, the key findings are:- 5-year-old girl - Looking pale and tired- Bruises and petechial bleeding- Leukocytosis, severe anemia, thrombocytopenia- 35 blasts on peripheral blood smear- Hepatosplenomegaly - Mediastinal massThis constellation of symptoms and findings is most consistent with acute leukemia. The young age of 5 years old makes acute lymphoblastic leukemia ALL much more likely than acute myeloid leukemia AML. The other options can be ruled out based on the acute presentation and young age of the patient.A: Acute lymphoblastic leukemia 