Polymerisation of 1,1-dichloroethene gives a compact substance with a high melting point that does not let gases pass through. It is used for cling wrapping. Which repeating sequence is found in a short section of the polymer chain?
- A$\{\text{CH}_2\text{CCl}_2\text{CH}_2\text{CCl}_2\text{CH}_2\text{CCl}_2\}$
- B$\{\text{CHClCHClCHClCHClCHClCHCl}\}$
- C$\{\text{CCl}_2\text{CCl}_2\text{CCl}_2\text{CCl}_2\text{CCl}_2\}$
- D$\{\text{CH}_2\text{CCl}_2\text{CHClCHClCH}_2\text{CCl}_2\}$