[tex](4x - 3)(3 {x}^{2} - 4x - 3)[/tex]
We can use a Punnett Square to FOIL this (picture attached).
From this, we find that is equals
[tex]12 {x}^{3} - 16 {x}^{2} - 12x \\ - 9 {x}^{2} + 12x + 9[/tex]
We can simplify this to equal
[tex]12 {x}^{3} - 25 {x}^{2} + 9[/tex]
This is answer D.