C-02-Q073mediumsingle_mcqThe expression a3+b3+c3−3abca^3 + b^3 + c^3 - 3abca3+b3+c3−3abc equals:a(a+b+c)(a2+b2+c2+ab+bc+ca)(a + b + c)(a^2 + b^2 + c^2 + ab + bc + ca)(a+b+c)(a2+b2+c2+ab+bc+ca)b(a+b+c)(a2+b2+c2−ab−bc−ca)(a + b + c)(a^2 + b^2 + c^2 - ab - bc - ca)(a+b+c)(a2+b2+c2−ab−bc−ca)c(a−b−c)(a2+b2+c2−ab−bc−ca)(a - b - c)(a^2 + b^2 + c^2 - ab - bc - ca)(a−b−c)(a2+b2+c2−ab−bc−ca)d(a+b+c)3(a + b + c)^3(a+b+c)3