Answer:
Option: D is the correct answer.
D. it is not possible to determine
Explanation:
We know that a binomial is a polynomial with two terms and the polynomial may be of any degree and may contain at most 4 terms i.e. it may be a binomial, trinomial or a polynomial with four terms.
a)

We get a trinomial
b)

Hence, we get a polynomial with four terms.
c)

Now we got a binomial.
Hence, the best possible answer is:
D. it is not possible to determine