Identify the major product (P) in the following reaction sequence
\(\left(\mathrm{CH}_3\right)_3 \mathrm{CBr} \xrightarrow[\mathrm{KOH} \Delta]{\text { Alcoholic }} \mathrm{X} \xrightarrow{\mathrm{HBr}} \mathrm{P}\)
1
(CH3)3CBr
2
(CH3)2CHCH2Br
3
4
CH3 - CH = CH - CH2Br