The diagram illustrates the monomer from which polyvinyl chloride, PVC, is made. If one particular polymer molecule is formed from $n$ monomer molecules (where $n$ is many thousands), which of the following statements are true? 1 The relative molecular mass of this polymer molecule is about $62.5n$. 2 This polymer molecule contains $n$ chiral carbon atoms. 3 A single polymer molecule has $5n$ $\sigma$ bonds.
- A1, 2 and 3 are correct
- B1 and 2 only are correct
- C2 and 3 only are correct
- D1 only is correct