Sugar may be fermented to make ethanol. Several steps in the process used to make and purify ethanol are shown. 1 Place in a warm location. 2 Introduce yeast. 3 Fractionally distil the solution. 4 Dissolve the sugar in water. 5 Filter off the yeast. 6 Crush some sugar cane. Which sequence of these stages is correct?
- A$4 \rightarrow 6 \rightarrow 2 \rightarrow 1 \rightarrow 5 \rightarrow 3$
- B$6 \rightarrow 4 \rightarrow 1 \rightarrow 2 \rightarrow 5 \rightarrow 3$
- C$6 \rightarrow 4 \rightarrow 2 \rightarrow 1 \rightarrow 3 \rightarrow 5$
- D$6 \rightarrow 4 \rightarrow 2 \rightarrow 1 \rightarrow 5 \rightarrow 3$