Solutions

The following solutions were prepared by dissolving 10 g of glucose ($\mathrm{C_6H_{12}O_6}$) in 250 mL of water ($P_1$), 10 g of urea ($\mathrm{CH_4N_2O}$) in 250 mL of water ($P_2$) and 10 g of sucrose ($\mathrm{C_{12}H_{22}O_{11}}$) in 250 mL of water ($P_3$). The right option for the decreasing order of osmotic pressure of these solutions is: