Using a drop down list to filter graph

Good morning.
I have a Scatter graph with 80+ columns of data. Which is too much. What I am wanting to do is filter the graph by a drop down list.

So for example the 3 columns should be under a graph called "A" the next 5 under a graph called "B" etc etc.

The number of columns that need to be shown on each graph varies and is not necessarily 1 after another.
I think the best thing is a vlookup or drop down list. But I don't even know where to start.
Please see attached spreadsheet.
Any question let me know and I will try to clarify.