Consider f(x) = 4x^3 – 5, g(x) = 2x + 5 and h(x) =2x^2+2x. Which statement about (f + g – h) is true?

a) It is a quadratic trinomial function

b) It is a cubic function of 4 terms

c) It is a cubic binomial function

d) It is a quadratic binomial function