The diagram shows the arrangement of a polymer. By what method could this polymer be produced?
- Apolymerise ethene followed by hydration
- Bpolymerise ethene followed by oxidation with cold, acidified $\text{KMnO}_4$
- Cpolymerise 1,2-dichloroethene followed by hydrolysis
- Dpolymerise 1,2-dichloroethene followed by oxidation with cold, acidified $\text{KMnO}_4$