问题详情

Which statement can be supported by Heather Dickinson and Louise Parker"s new findings？
A．Radiation has contributed to the disease.
B．Putting a lot of people from rural area in a large town increases the risk of childhood leukemia.
C．Population mixing is the most important reason for leukemia cluster.
D．Childhood leukemia is caused by an unusual infection.请帮忙给出正确答案和分析，谢谢！