I. Primary ${\mathrm{CO}}_2$ acceptor
II. Extent of photorespiration
III. Presence of Calvin cycle
IV. Leaf anatomy
V. Enzyme involved in first carbon dioxide fixation.
Which one does not differ between ${\mathrm{C}}_3$ and  ${\mathrm{C}}_4$ plants ?

• A

  I and V

• B

  Only III

• C

  II and III

• D

  (IV ) and (V)