Changes in Boiling Point, Freezing Point, and Vapor Pressure Are

Multiple Choice

Changes in boiling point, freezing point, and vapor pressure are

A) the same for 2 M NaCl as they are for 2 M CaCl_2.
B) the same for 50 mL of 2 M NaCl as they are for 250 mL of 1 M NaCl.
C) the same for 75 mL of 2 M NaCl as they are for 50 mL of 2 M NaOH.
D) the same at 1 atm as at 1.55 atm.