Which is true about the minimum output value of the

Last updated: 8/4/2022

Which is true about the minimum output value of the function. f(x) = mx² +nx + p? OA) minimum value is f(-n/2m) only when m is positive OB) minimum value is f(-n/2m) only when m is negative OC) minimum value is -n/2m only when m is positive OD) minimum value is -n/2m only when m is negative