If f(x)=x2−4x+7f(x) = x^2 - 4x + 7f(x)=x2−4x+7, what is the range of fff on the closed interval [0,3][0, 3][0,3]?
[3,7][3, 7][3,7]
[4,7][4, 7][4,7]
[3,4][3, 4][3,4]
[0,7][0, 7][0,7]