Three flasks were arranged as shown at $35\,^{\circ}\text{C}$. A balloon was fitted to the mouth of each flask. Flask 1 contains water, yeast and sugar. Flask 2 contains water and sugar. Flask 3 contains water and yeast. The degree of balloon inflation was noted after one hour. In what order are the balloons arranged from the one that is most inflated to the one that is least inflated?
- A$1 \rightarrow 3 \rightarrow 2$
- B$1 \rightarrow 2 \rightarrow 3$
- C$3 \rightarrow 1 \rightarrow 2$
- D$3 \rightarrow 2 \rightarrow 1$