A $0\mathrm{.}9\%$NaCl solution is isotonic to red blood cells. What would happen to the size of a red blood cell if it was placed in a $0\mathrm{.}5\%$NaCl solution?

Water would diffuse into the cell, and the cell would swell in a process called crenation.

Water would diffuse out of the cell, and the cell would shrink in a process called hemolysis.

Water would diffuse into the cell, and the cell would swell in a process called hemolysis.

Water would diffuse out of the cell, and the cell would shrink in a process called crenation.