7 of 1010 PointsThat is the multiplicity of each of the roots of the graph of f(x) = 2x + 12r³ +16r² - 12x - 18?-3, multiplicity 1; -1, multiplicity 1; 1, multiplicity 1B.-3, multiplicity 2; -1, multiplicity 3; 1, multiplicity 1C.-3, multiplicity 2; 1, multiplicity 2D.-3, multiplicity 2; -1, multiplicity 1; 1, multiplicity 1set Selection