Compound Z has the molecular formula $\text{C}_4\text{H}_8\text{O}_2$. In the presence of concentrated $\text{H}_2\text{SO}_4$, compound Z reacts with propan-1-ol. The diagram presents the skeletal formulae for three compounds, S, T and U. Which skeletal formulae could be formed as the products of the reaction between compound Z and propan-1-ol?
- AS and T
- BU only
- CS and U
- DT only