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: Pathology
Radiation is most commonly associated with which of the following cancer ? 
Select and explain. 
A. Leukemia, B. Lymphoma, C. Lung carcinoma, D. Osteoblastoma
A: Leukemia
Answer: A: Leukemia 
Explanation: Answer- A. LeukemiaLeukemia is the most common radiation induced cancer. All leukemias, except CLL, can be caused by radiations.