X is an organic compound whose mass composition is 30.6% carbon, 3.8% hydrogen, 20.4% oxygen and 45.2% chlorine. Calculate the empirical formula of X.
- A$\text{C}_2\text{H}_3\text{OCl}$
- B$\text{C}_2\text{H}_4\text{OCl}$
- C$\text{C}_3\text{H}_4\text{OCl}$
- D$\text{C}_4\text{H}_3\text{O}_2\text{Cl}_2$