Select the correct answer. The vertex of a parabola is at the point (3,1), and its focus is at (3,5). What function does the graph represent?
OA 1(x) = 1 18 + - 3)2 - 1
OB. f(x) = 4(+ + 3)2 - 1
OC 1(a)=£(– 3)2 - 1
OD. f(x) = tolo – 3)2 + 1