$cis$ and $trans-2-butene$ are:

Which of the following compounds exists as geometric isomers?

Which of the following compounds does not exhibit geometrical isomerism?

The incorrect statements regarding geometrical isomerism are :
$(A)$ Propene shows geometrical isomerism.
$(B)$ Trans isomer has identical atoms/groups on the opposite sides of the double bond.
$(C)$ Cis$-$but$-2-$ene has higher dipole moment than trans$-$but$-2-$ene.
$(D)$ $2-$methylbut$-2-$ene shows two geometrical isomers.
$(E)$ Trans$-$isomer has lower melting point than cis isomer.
Choose the $CORRECT$ answer from the options given below :

Geometrical isomerism is caused by ........

Total number of stereoisomers of the compound $1, 4$-dichlorocyclohexane is