Which of the Following Statements Concerning Membrane Transport Across the Plasma

Which of the following statements concerning membrane transport across the plasma membrane is true?

A) Polar molecules are transported more easily than nonpolar molecules.
B) Lipid-soluble substances pass through the membrane by dissolving in the lipid bilayer.
C) Water cannot move through the membrane.
D) Generally, cations pass through the membrane more easily than anions.
E) All molecules are moved across by active transport.