Select the correct answer. Function f is represented by the equation shown.

f(x)=x^2-4x+3

Function g has a vertex at (1,3) and the parabola opens downwards.

Which statement is true?

A.
The y-intercept of function f is greater than the y-intercept of function g.
B.
The y-intercept of function f is less than the y-intercept of function g.
C.
The minimum of function g is at (1,3).
D.
The minimum of function f is at (-4,3).