Which expression is the result of factoring the expression below by taking out its greatest common factor? 4x^2+16x-4=\,?4x
2
+16x−4=?4, x, squared, plus, 16, x, minus, 4, equals, question mark
Choose 1

(Choice A)
A
2x\left(2x^2+8x-2\right)2x(2x
2
+8x−2)2, x, left parenthesis, 2, x, squared, plus, 8, x, minus, 2, right parenthesis

(Choice B)
B
2\left(2x^2+8x-2\right)2(2x
2
+8x−2)2, left parenthesis, 2, x, squared, plus, 8, x, minus, 2, right parenthesis

(Choice C)
C
4x\left(x^2+4x-1\right)4x(x
2
+4x−1)4, x, left parenthesis, x, squared, plus, 4, x, minus, 1, right parenthesis

(Choice D)
D
4\left(x^2+4x-1\right)4(x
2
+4x−1)