Scores above the ACs?

Hi everyone, it’s my first month of learning on 7Sage, so haven’t fully grasped all the numbers!

Just noticed there are scores above the ACs on LR questions. For example, the curve of the Q was from 125-140, but the numbers above the ACs ranged from 155 to 165. Does that mean that, for example, someone who picks AC B on average scores 162? Then, what’s the point of The Curve?

Thanks!