This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
Which of the following is the most common tumour associated with Neurofibromatosis -1 (NF-I) in a child? 
Select and explain. 
A. Juveile Myelomonocytic Leukemia (JMML), B. Acute Lymphoblastic Leukemia (ALL), C. Acute Myeloid Leukemia (AML), D. Chronic Myeloid Leukemia (CML)
A: Juveile Myelomonocytic Leukemia (JMML)
Answer: A: Juveile Myelomonocytic Leukemia (JMML) 
Explanation: Children with neurofibromatosis type 1 have higher risk of developing juvenile myelomonocytic leukemia. Ref: Essential pediatrics by O.P.Ghai 6th edn/page 545; Rook's textbook of dermatology, Volume 1 By Ahur Rook, Tony Burns (FRCP.)page 2-32.