Which incorrect about alkyl bromide having molecular formula C5H11Br?

• A. One isomeric alkyl bromide undergoes E1 elimination at the fastest rate
• B. Only one is incapable of reacting by the E2 mechanism
• C. Only one isomer gives a single alkene on E2 elimination
• D. 2-Bromopentane gives the most complex mixture of alkenes on E2 elimination