Which of the following statements about passive transport is correct?

• A. Passive transport operates independently of diffusion.
• B. Passive transport operates independently of the concentrations of the moving solute.
• C. In passive transport, solute movement stops when the solute concentration is the same on both sides of the membrane.
• D. Passive transport does not occur in the human body.
• E. Passive transport permits the solute to move in either direction, but the net movement of solute molecules occurs down the concentration gradient of the molecule.