If halogenoalkanes are heated in ethanol containing KOH, they can undergo elimination to produce alkenes. Which elimination products may be formed if 2-bromobutane is heated with KOH dissolved in ethanol?
- A$\text{CH}_3\text{CH}= ext{CHCH}_3$ only
- B$\text{CH}_3\text{CH}_2\text{CH}= ext{CH}_2$ only
- C$\text{CH}_3\text{CH}= ext{CHCH}_3$ and $\text{CH}_3\text{CH}_2\text{CH}= ext{CH}_2$
- D$\text{CH}_3\text{CH}= ext{CHCH}_3$ and $\text{CH}_2= ext{CHCH}= ext{CH}_2$