Total number of stereoisomers of the compound $1-$bromo$-3-$chlorocyclobutane.

The separation of a racemic mixture into pure enantiomers is termed as

The compound$(s)$ showing optical activity is/are:

Which of the following is optically active?

Which of the following is optically active?

Given below are two statements.
Statement $I$: The compound shown below is optically active.
[Image of compound $A$]
Statement $II$: The compound shown below is the mirror image of the above compound $A$.
[Image of compound $B$]
In the light of the above statements,choose the most appropriate answer from the options given below.