For the polynomial function f(x) = (x^4) - 12(x^3) + 46x - 60x + 25, find all local and global extrema.The only extrema point is

For the polynomial function f(x) = (x^4) - 12(x^3) + 46x² - 60x + 25, find all local and global extrema.The only extrema point is (0,25).No local extrema exist.The local and global extrema are: (1, 0), (3, 16) and (5,0).No global extrema exist.