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