In a stepwise reaction, 1,1-dichloropropane is treated with aqueous sodium hydroxide to form propanal. $\text{CH}_3\text{CH}_2\text{CHCl}_2 \xrightarrow{\text{NaOH}(aq)} \text{CH}_3\text{CH}_2\text{CHO}$. Which term is used for the first stage of this reaction?
- Aaddition
- Belimination
- Coxidation
- Dsubstitution