Caprolactone is a cyclic ester. Its use in the production of specialist polymers is increasing. From which compound could caprolactone be produced by a single reaction?
- A$\text{OHCCH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{CHO}$
- B$\text{HOCH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{OH}$
- C$\text{HOCH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{CO}_2\text{H}$
- D$\text{HO}_2\text{CCH}_2\text{CH}_2\text{CH}_2\text{CH}_2\text{CO}_2\text{H}$