Ethene is allowed to react with steam in the presence of concentrated $\text{H}_3\text{PO}_4$. The product from this reaction is then added to acidified potassium dichromate(VI) and heated under reflux for one hour. The final organic product is collected and labelled $X$. But-$2$-ene is warmed with hot, concentrated, acidified potassium manganate(VII). The final organic product is collected and labelled $Y$. Which statement is correct?
- AOne molecule of $X$ has more carbon atoms than one molecule of $Y$.
- BOne molecule of $Y$ has more carbon atoms than one molecule of $X$.
- C$X$ and $Y$ have different functional groups.
- D$X$ is the same compound as $Y$.