Arrange the following events of mass flow of organic material in sequence:
$I$. Sugars are transported from cell to cell in the leaf
$II$. Food is synthesized in form of glucose by leaf cells
$III$. Movement of water takes place into sieve tube elements
$IV$. Downward movement of sugar occurs in the stem
$V$. Solutes are actively transported into the sieve elements

• A
  $I, II, III, V, IV$
• B
  $II, I, V, III, IV$
• C
  $II, III, I, V, IV$
• D
  $I, II, V, IV, III$