The following solutions were prepared by dissolving 10 g glucose ($\text{C}_6\text{H}_{12}\text{O}_6$) in 250 ml of water ($\text{P}_1$) 10 g of urea ($\text{CH}_4\text{N}_2\text{O}$) in 250 ml of water ($\text{P}_2$) and 10 g of sucrose ($\text{C}_{12}\text{H}_{12}\text{O}_{11}$) in 250 ml of water ($\text{P}_3$). The right option for the decreasing order of osmotic pressure of these solutions is