Find the critical points of the following function. f(x) = 3x2 - 5x +4 What is the derivative of f(x) = 3x2 - 5x + 4? f' ( x) = Find the critical points, if any, of f on the domain. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The critical point(s) occur(s) at x = (Use a comma to separate answers as needed.) O B. There are no critical points for f(x) = 3x2 - 5x + 4 on the domain