Check all of the possible first steps in factoring a polynomial with four terms. A.factor out a GCF
B.factor the difference of cubes
C.factor a sum of cubes
D.factor a difference of squares
E.factor a perfect-square trinomial
F.factor by grouping
B.factor the difference of cubes
C.factor a sum of cubes
D.factor a difference of squares
E.factor a perfect-square trinomial
F.factor by grouping