I am thoroughly confused by Lesson 7 (Tunisian & Aran). I was fine with the 5" swatch of Afghan, but the project is confusing for me.

It says "Plan an Intermediate project with Aran stitches knurl, diamond, cable." Does it mean EITHER knurl, diamond or cable? Or does it mean knurl, diamond, and cable?

Did you all do all 3, or did you choose one?

Thanks in advance!!