Which value of  serves as a counter example to the statement .

Diffention of counterexample:

Counterexample is an example that is used to disprove a statement.

Counterexample is .

Verify given options:

Option A:

The value of .

              (Substitute )

                     (Multiply)

does not satisfies the condition.

Option A is a counter example.

Option B:

The value of .

           (Substitute )

                      (Simplify)

satisfies the condition.

Option B is a not counter example.

Option C:

The value of .

          (Substitute )

                       (Simplify)

satisfies the condition.

Option C is a not counter example.

Option D:

The value of .

                (Substitute )

                       (Simplify)

satisfies the condition.

Option D is a not counter example. 

Threfore, option A is the right choice.

Option A is the right choice.