For questions like these, I always like to translate the figure in my head or on paper so I can get a visual of what is going on.
Take answer A, and translate the figure in your head 1 unit to the left, and then rotate it 180 degrees counterclockwise about the origin. This happens to be the correct answer so we don't have to investigate the others.
This means the answer is A.
Remember that when you move the figure one unit left, it becomes 1 unit away from the x-axis, so the figure must STAY that way during a rotation about the origin.
Explanation: We will try to simplify the given expression into terms of ab and then substitute with ab = x as follows: 2a³b + a²b + ab a² (2ab + ab) + ab a² (3ab) + ab a² (3x) + x
Since ab = x, therefore, a = x/b Substitute with this in the above expression to get: (x/b)²(3x) + x + x