We are asked to choose the reason why
is the exact quotient for
divided by
.
We know that divisor is the number that we divide with. The quotient is the answer to any division problem. Dividend is the number that we want to divide.

We can see that is our given problem dividend is
, quotient is
and divisor is
. Upon multiplying quotient with divisor, we will get:

We can cancel out 5 from numerator and denominator.




Since both sides are equal, therefore, last option
is the correct choice.