Consider the following statements regarding osmotic pressure:
(A) Molar mass of a protein can be determined using osmotic pressure method.
(B) The osmotic pressure is proportional to the molarity.
(C) Reverse osmosis occurs when a pressure larger than osmotic pressure is applied to the colloidal solution side.
(D) Edema occurs due to retention of water in tissue cells as a result of osmosis.
Choose the correct statements with reference to osmotic pressure:

Correct option is C

A. Measurement of osmotic pressure method is preferred for the determination of molar masses of macromolecules such as proteins and polymers.
B. Directly proportional to the molar concentration of the solution, inversely proportional to the molecular weight of the solute.
C. In osmosis, solvent moves from low concentration to high concentration, but in R.O., reverse happens. In order to do so pressure is applied to concentrated solution side.
D. People taking lot of salt experience puffiness or swelling of the body due to water retention in tissue cells and intercellular spaces because of osmosis. There is because of the hypertonic condition that is created due to intake of excess salt.