Compound J reacts with excess oxygen to produce only carbon dioxide and water. If a $3.00\,\text{g}$ sample of compound J is burned in excess oxygen, $4.40\,\text{g}$ of carbon dioxide and $1.80\,\text{g}$ of water are produced. What is the empirical formula of J?
- A$\text{CH}$
- B$\text{CHO}$
- C$\text{CH}_2$
- D$\text{CH}_2\text{O}$