B

Step 1: Analyze the position-time graph.
The graph shows two lines representing the positions of cars A and B over time.

Step 2: Determine the slope of the lines.
The slope of a position-time graph represents velocity. A steeper slope indicates a higher speed.

Step 3: Compare the slopes of lines A and B.
Since line B has a steeper slope than line A, it indicates that car B is moving faster than car A.

Step 4: Assess other options.
Option C is incorrect because the lines have different slopes (different velocities).
Option D is incorrect because the graph shows straight lines, indicating constant velocity rather than acceleration.
Therefore, the correct answer is Option B.