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

Stomata are almost unequally distributed in both upper and lower epidermis.

Mesophyll is homogenous and not differentiated into upper palisade and lower spongy tissue. Cells of mesophyll are isodiametric with intercellular spaces.

Vascular bundles are of different sizes and placed not at equal distance.

Vascular bundles are conjoint collateral and open.