Van’t Hoff factors of aqueous solutions of X,Y and Z are 1.8, 0.8, 2.5 respectively. Hence correct order of the colligative property will be

Greater the value of i , greater will be the colligative propertyi Lowering of VP  Elevation of BP   Depression of FP    Osmotic pressureiX = 1.8 , iy = 0.8 , iz =2.5iz > iX > iyA) LVP of  Z>X>Y    VP of Z < X X > Y    FP of Z X > Y     BP of Z > X > YD) OP of Z > X >YThus BP of Y < X < Z  is correct