Osmosis is best defined as the movement of:

• A. Water molecules across a semi-permeable membrane into a region of low solute concentration
• B. Solute molecules from an area of high concentration to an area of lower concentration
• C. Water molecules across a semi-permeable membrane into a region of high solute concentration
• D. Water molecules inside a cell that can't be transported out
• E. Solute molecules from an area of low concentration to an area of higher concentration