Select the polynomial that can be factored as (2x -1)(2x + 1) .
A4x^2 + 1
B4x^2 - 1
C4x^2 + 4x + 1
D4x^2 + 4x - 1
A4x^2 + 1
B4x^2 - 1
C4x^2 + 4x + 1
D4x^2 + 4x - 1