Calculate the depression in the freezing point of water when 10g of CH₃CH₂CHClCOOH is added to 250g of water. Ka = 1.4 x 10⁻³ kg = 1.86 k kg mol⁻¹.
a) -0.37 K
b) -0.74 K
c) -1.11 K
d) -1.48 K