单选题：What can be inferred about completely normally fed mice men

题目分类：综合类
题目类型：单选题
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题目内容：

What can be inferred about completely normally fed mice mentioned in the passage? 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.

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