Compound X, $\text{C}_4\text{H}_8\text{O}_2$, contains a straight carbon chain. An aqueous solution of X has an approximate pH of 3. Compound Y, $\text{C}_3\text{H}_8\text{O}$, is a secondary alcohol. X and Y are mixed and reacted in the presence of a small amount of concentrated sulfuric acid to produce Z as the main organic product. Which structural formula represents Z?
- A$(\text{CH}_3)_2\text{CHCO}_2\text{CH}_2\text{CH}_2\text{CH}_3$
- B$\text{CH}_3(\text{CH}_2)_2\text{CO}_2\text{CH}(\text{CH}_3)_2$
- C$\text{CH}_3(\text{CH}_2)_2\text{CO}_2(\text{CH}_2)_2\text{CH}_3$
- D$(\text{CH}_3)_2\text{CHCO}_2\text{CH}(\text{CH}_3)_2$