A student is tasked with separating a liquid mixture containing propanone (boiling point 56∘C56^\circ\text{C}56∘C) and ethyl ethanoate (boiling point 77∘C77^\circ\text{C}77∘C). These two liquids are completely miscible.

Which of the experimental setups shown is most appropriate to separate these two liquids with high purity?
Setup A
Setup B
Setup C
Setup D