HCF and LCM of two polynomials are `(x+3)and(x^(3)-9x^(2)-x+105)` respectively. If one of the teo polynomials is `x^(2)-4x-21`, then the other is

Options

A. `x^(2)+2x-21`
B. `x^(2)+2x+15`
C. `x^(2)-2x-15`
D. `x^(2)-x-15`