Which observation(s) reflect(s) colligative properties?

(i) A 0.5 m NaBr solution has a higher vapour pressure than a 0.5 m BaCl₂ solution at the same temperature

(ii) Pure water freezes at the higher temperature than pure methanol

(iii) a 0.1 m NaOH solution freezes at a lower temperature than pure water

Choose the correct answer from the codes given below

(a) (i), (ii) and (iii)

(b) (i) and (ii)

(c) (ii) and (iii)

(d) (i) and (iii)