Problem to count item Pareto

[#1]

Hello, i have done a graph of Pareto following a guide, in the picture there is a result. Is possible to show only class A, B or C? And Count in a different table the different class?

Thanks in advance.

[Gysbert_Wassenaar]

Only class A is possible. But only class B or C is at least very difficult and possibly not doable.