C-02-Q131mediumsingle_mcqIf g(x)=x3+ax2−3x−6g(x) = x^3 + ax^2 - 3x - 6g(x)=x3+ax2−3x−6 and g(−2)=0g(-2) = 0g(−2)=0, then a=a =a=a−2-2−2b111c222d