$S$ - Statement: In $Ascaris$,excretion occurs through flame cells.
$R$ - Reason: Platyhelminthes possess a complete digestive system.
$R$ - Reason: Platyhelminthes possess a complete digestive system.
- 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$S$ and $R$ are both false.
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