The reaction below may be used to extend a carbon chain. $\text{CH}_3\text{CH}_2\text{CH}_2\text{Br} + \text{CN}^- \rightarrow \text{CH}_3\text{CH}_2\text{CH}_2\text{CN} + \text{Br}^-$ Which row gives the correct reagent and conditions for carrying out this reaction?
- AKCN; heat under reflux in dilute sulfuric acid
- BKCN; heat under reflux in ethanol
- CHCN; heat under reflux in dilute sulfuric acid
- DHCN; heat under reflux in ethanol