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: Medicine
A 6 years old child presents with joint pain, respiratory distress and recurrent infection, He has pallor, conjunctival hemorrhage and splenomegaly chest x- ray shows mediastinal mass. Diagnosis is 
Select and explain. 
A. ALL, B. CML, C. Pulmonary metastasis, D. Sjogren syndrome
A: ALL
Answer: A: ALL 
Explanation: None