问题：

[单选,材料题] What can he inferred about completely normally fed mice mentioned in the passage?

根据以下资料，回答下面的题目。


According to the passage，which of the following is NOT true?

A . They will not experience free radical production．
B . They will experience more genetic rejuvenation in their lifetime．
C . They have more old liver genes to behave like young genes．
D . They are more likely to suffer from inflammation．