A mixture of the gases $\text{CH}_3\text{Cl}$ and $\text{Cl}_2$ is exposed to ultraviolet light. Which compound is formed in a termination step of the reaction?
- A$\text{HCl}$
- B$\text{CH}_2{=}\text{CH}_2$
- C$\text{CH}_2\text{ClCH}_2\text{Cl}$
- D$\text{H}_2$