What are the correct $E/Z$ designations for the structure below?

Which of the following can show geometrical isomerism?

Which kind of isomerism will butene-$2$ show?

Which of the following compounds can show stereoisomerism?

$1, 2-Dichloroethene$ shows:

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 :