In addition to the outer cell membrane, certain cells contain inner membranes that surround the individual organelles. Which of the following explains why the presence of internal membranes affords these cells an advantage over cells lacking such structures? O A. Compartmentalization keeps different functions separated within the cell. O B. The presence of internal membranes causes cells to be larger, decreasing the cell's surface-area-to-volume ratio. O C. Proteins and other molecules can move more slowly between organelles via a transport system than by diffusion. D. The synthesis of cell components to support internal membranes increases the cell's energy expenditures.