$A -$ Calvin cycle starts with the carboxylation of $RuBP$.
$R -$ Photorespiration starts with the oxygenation of $RuBP$.
$R -$ Photorespiration starts with the oxygenation of $RuBP$.
- A$A$ and $R$ are true.
- B$A$ and $R$ are false.
- C$A$ is true but $R$ is false.
- D$A$ is false but $R$ is true.
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