$S$ Statement: Amorphophallus (Elephant foot yam) has a large inflorescence of about $6 \ m$ height.
$R$ Statement: Rafflesia arnoldii has the largest flower with a weight of about $8 \ kg$ and a diameter of about $1 \ m$.

• A
  $S$ and $R$ are both true,$R$ 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.