Select the correct feature for facilitated diffusion.

Find correct statements from the following
$\mathrm{A})$ Protein transporters are responsible for maximum rates of transport under saturated state
$\mathrm{B})$ Translocation of substances in bulk flow requires hydrostatic pressure gradient
$\mathrm{C})$ Root pressure plays the greatest contribution for upward movement of water in tall plants
$\mathrm{D})$ Transport proteins of endodermal cells are control points for active transport of ions in two directions

The correct answer is