Factor out the GCF for 21x^3y^2 - 7x^2y + 42xy
Select one:
A7x^2y + 42xy
B7x^2y(3xy - 1 + 6)
C7xy(3x^2y - x + 6)
D7(3x^3y^2 - x^2y + 6xy)
Select one:
A7x^2y + 42xy
B7x^2y(3xy - 1 + 6)
C7xy(3x^2y - x + 6)
D7(3x^3y^2 - x^2y + 6xy)