Choose the correct options from the following:
$I$. Annual and biennial plants show clear-cut vegetative,reproductive,and senescent phases.
$II$. Bamboo species flower only once in their life,generally after $50-100$ years.
$III$. $Strobilanthus$ $kunthiana$ is a monocarpic plant which flowers only once after $12$ years.

• A
  $I, III$ are correct
• B
  $II$ is correct
• C
  $I, II$ are correct
• D
  $III$ is correct