If \(\omega\) is an imaginary cube root of unity, then the value of \((2-\omega)\left(2-\omega^{2}\right)+2(3-\omega)\left(3-\omega^{2}\right)+\ldots . .+(n-1)(n-\omega)\left(n-\omega^{2}\right)\) is
(A) \(\frac{n^{2}}{4}(n+1)^{2}-n\)
(B) \(\frac{n^{2}}{4}(n+1)^{2}+n\)
(C) \(\frac{n^{2}}{4}(n+1)^{2}\)
(D) \(\frac{n^{2}}{4}(n+1)-n\)