Which of the following statements about osmosis and osmotic pressure of dilute solutions is/are correct?

1. A$0.10\mathrm{M}$ glucose and $0.10\mathrm{M}$ $\mathrm{NaCl}$ (fully dissociated) are isotonic at the same temperature.
2. BIn reverse osmosis the pressure applied to the solution must exceed its osmotic pressure.
3. COsmotic pressure depends on the number of solute particles, not on their chemical nature.
4. DAt constant temperature, the osmotic pressure of a dilute solution is proportional to its molar concentration.