A value of ccc for which the minimum value of f(x)=x2−4cx+8cf(x)=x^{2}-4cx+8cf(x)=x2−4cx+8c is greater than the maximum value of g(x)=−x2+3cx−2cg(x)=-x^{2}+3cx-2cg(x)=−x2+3cx−2c, is
222
12\dfrac{1}{2}21
−12-\dfrac{1}{2}−21
−2-2−2