Solve: (6x^3 - 1x^2 + 1) divided by (2x + 1)
A-3x^2 + 2x -1
B3x^2 - 2x + 1
C-3x^2 + 2x - 1
D3x^2 2x - 1
A-3x^2 + 2x -1
B3x^2 - 2x + 1
C-3x^2 + 2x - 1
D3x^2 2x - 1