Pure water freezes at 273K and 1 bar. The addition of 34.5gm of ethanol to 500g of water changes the freezing point of the solution. Use the freezing point depression constant of water as  $2K{\text{ Kgmol}}^{-1}$. The figure show below represent plot of vapour pressure (V.P) versus temperature (T). Among the following the option representing change in freezing point is : (Mol. Wt of ethanol =46 gm $mo{l}^{-1}$ ).