$S -$ Statement: Cells cannot maintain their efficient size through mitosis.
$R -$ Reason: Meiosis is an important process for evolution.
$R -$ Reason: Meiosis is an important process for evolution.
- A$S$ and $R$ are both true,and $R$ is the correct explanation of $S$.
- B$S$ and $R$ are both true,but $R$ is not the correct explanation of $S$.
- C$S$ is true and $R$ is false.
- D$S$ is false and $R$ is true.
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