Which row gives the correct description of alkenes?
- Ageneral formula $\text{C}_n\text{H}_{2n+2}$; result when shaken with aqueous bromine: no change
- Bgeneral formula $\text{C}_n\text{H}_{2n+2}$; result when shaken with aqueous bromine: the aqueous bromine is decolourised
- Cgeneral formula $\text{C}_n\text{H}_{2n}$; result when shaken with aqueous bromine: no change
- Dgeneral formula $\text{C}_n\text{H}_{2n}$; result when shaken with aqueous bromine: the aqueous bromine is decolourised