Which of the following has been arranged in the order of decreasing freezing point ? (a) 0.05 M KNO3 > 0.04 M BaCl > 0.140 M sucrose > 0.075 M CuSO4 (b) 0.04 M BaCl > 0.140 M sucrose > 0.075 M CuSO4 > 0.05 M KNO3 (c) 0.075 M CuSO4> 0.140 M sucrose > 0.04 M BaCl > 0.05 M KNO3 (d) 0.075 M CuSO4 > 0.05 M KNO3 > 0.140 M sucrose > 0.04 M BaCl2