Choose the correct statement with respect to monocot (isobilateral) leaf. 

• A

  Stomata are limited to only upper epidermis 

• B

  Mesophyll is differentiated into upper palisade and lower spongy tissue

• C

  Vascular bundles are almost of the same size except of larger veins and placed at equidistance

• D

  Vascular bundles are conjoint collateral and open.