question_answer

\[{{\mathbf{l}}^{\mathbf{3}}}{{\mathbf{(m-n)}}^{\mathbf{3}}}\mathbf{+}{{\mathbf{m}}^{\mathbf{3}}}{{\mathbf{(n-l)}}^{\mathbf{3}}}\mathbf{+}{{\mathbf{n}}^{\mathbf{3}}}{{\mathbf{(l-m)}}^{\mathbf{3}}}\]equals to _________

A) \[{{(lmn)}^{3}}(l-m)(m-n)(n-l)\]

B)                                \[(lm+mn+nl)(3{{l}^{2}}{{m}^{2}}{{n}^{2}})\]

C) \[3lmn(m-n)(n-l)(l-m)\]

D)                                0

E) None of these