Welcome to the forums Bryan! If you're working in Excel, go get this:
Install it. Then click cell B2 in (your table) and click reshape. You'll end up with three columns, Client Numbers, Offers and Responses. This narrow-tall data shape is best for Tableau.
Thanks. I am not using Excel, rather a MySQL table, but it is crosstabular. I have heard that Tableau likes "up-and-down" data. I made a test table in the format of:
Client Number Product Offer? 1 A Yes 1 B Yes 1 Z null
... and have gotten it to work with a single calculated field on "offer" in Tableau.
It's just tough to convert my table given the number of combinations I'm working with (the above was just a small representation) and the fact that I've always thought in a crosstabular format. I mean, the above table takes 9 cells to display 4 cells worth of data from my original layout.