Osmometers Utilizing the Freezing Point Colligative Property of Solutions Are

Osmometers utilizing the freezing point colligative property of solutions are based on what principle?

A) 1 osmole of nonionizing substance dissolved in 1 kilogram of water raises the freezing point 1.86°C.
B) 1 osmole of nonionizing substance dissolved in 1 kilogram of water lowers the freezing point 1.86°C.
C) Increased solute concentration will raise the freezing point of water in direct proportion to a NaCl standard.
D) Deceased solution concentration will lower the freezing point of water in direct proportion to a NaCl standard.