Select the incorrect statements from the following.

A. A saturated solution will remain saturated at all temperatures.
B. A plant cell swells when placed in hypertonic solution.
C. The depression in freezing point is directly proportional to molality of the solution.
D. When isotonic solutions are separated by semipermeable membrane no osmosis occurs between them.
E. If the salt concentration is less than , then the solution is said to be hypotonic.
Choose the correct answer from the options given below.