Polymer X is an addition polymer. The monomer from which X is formed is but-1-ene. Polymer Y is a condensation polymer. The monomers from which Y is formed are $\text{HOCH}_2\text{CH}_2\text{OH}$ and $\text{HOOCCH}_2\text{COOH}$. Which statement about X and Y is correct?
- AThe repeat unit of X is $\text{-CH(CH}_3\text{)CH(CH}_3\text{)-}$ and Y is a polyamide.
- BThe repeat unit of X is $\text{-CH(CH}_3\text{)CH(CH}_3\text{)-}$ and Y is a polyester.
- CThe repeat unit of X is $\text{-CH}_2\text{CH(C}_2\text{H}_5\text{)-}$ and Y is a polyamide.
- DThe repeat unit of X is $\text{-CH}_2\text{CH(C}_2\text{H}_5\text{)-}$ and Y is a polyester.