What hydrocarbon will be obtained by the action of an alcoholic alkali solution on 2-bromo-2-methylbutene?

An error was made in the task: 2-bromo-2-methylbutane. So carbon is tetravalent.
Determine what kind of hydrocarbon will be obtained by the action of an alcoholic alkali solution on 2-bromo-2-methylbutane.
We write down the reaction equation.
CH3
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CH3 – CH2 – C – CH3 + NaOH (alcohol) -> NaBr + H2O + CH3 – CH = C – CH3
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Br CH3.
That is, when 2 – bromo – 2 – methylbutane interacts with alcohol with a solution of sodium alkali, the result is a compound 2 – methylbutene – 2.