Which of the following compounds will exhibit cis-trans (geometrical) isomerism?

Geometrical isomerism requires:Restricted rotation (double bond).Two different groups attached to each carbon of the double bond.In $2$ -Butene (${\text{CH}}_3\text{CH}={\text{CHCH}}_3$), each carbon of the double bond is attached to an $\text{H}$ and a ${\text{CH}}_3$. Thus, it exists as cis-$2$ -butene and trans-$2$ -butene.