Option a: is the correct answer.
Explanation:
The expression is
We shall simplify the expression, to determine the expression which is equivalent to
Multiplying the powers, we get,
Again multiplying the powers, we get,
Dividing the fractions, we have,
Applying the exponent rule, , we have,
Hence, the expression can be written as
Thus, the expression which is equivalent to is
Hence, Option a is the correct answer.