Which one of the following polynomials is necessarily odd?

MATHEMATICS · Single correct · AP · AP Precalculus · Polynomial and Rational Functions · Polynomial and Rational Functions

Problem

Which one of the following polynomials is necessarily odd? (a)

x^{5}+1

(b)

3x^{5}+2x^{3}

(c)

x^{4}-x^{2}

(d)

x^{3}+x^{2}