Which of these statements is correct?
- ACarboxylic acids contain the functional group $-\text{C}(=\text{O})\text{H}$.
- BEthanoic acid will react and fizz when copper is added.
- CEthanol will decolourise acidified potassium manganate(VII).
- DThe structure of ethyl ethanoate is $\text{HCOOCH}_2\text{CH}_3$.