The difference for the given polynomial is

Step-by-step explanation:
The given polynomial is

A polynomial is generally a sum or difference of terms or variables which are separated by addition and subtraction signs. There are "three types of polynomial": Monomial, binomial and trinomial.
The difference between is found as follows:
D =

Removing the brackets, we get,
D =

D =

D =

Thus, the polynomial represents Option A as the difference.