The function ggg is given in three equivalent forms. Which form most quickly reveals the vertex

(Choice A, Checked)
A
g(x)=\dfrac{1}{2}(x-8)^2-8g(x)=
2
1

(x−8)
2
−8g, left parenthesis, x, right parenthesis, equals, start fraction, 1, divided by, 2, end fraction, left parenthesis, x, minus, 8, right parenthesis, squared, minus, 8

(Choice B, Incorrect)
INCORRECT
g(x)=\dfrac{1}{2}(x-12)(x-4)g(x)=
2
1

(x−12)(x−4)g, left parenthesis, x, right parenthesis, equals, start fraction, 1, divided by, 2, end fraction, left parenthesis, x, minus, 12, right parenthesis, left parenthesis, x, minus, 4, right parenthesis

(Choice C)
C
g(x)=\dfrac{1}{2}x^2-8x+24g(x)=
2
1

x
2
−8x+24g, left parenthesis, x, right parenthesis, equals, start fraction, 1, divided by, 2, end fraction, x, squared, minus, 8, x, plus, 24
What is the vertex?
Vertex = ((left parenthesis
,,comma
))