Please don’t shoot me. But in December, congress made some tax law changes. They moved the 10% back to 7.5% and a handful of other things.(I’ll email you a power point that describes all the changes.) While I have no way of checking how the test is graded, I’m told that the test answers now reflect the tax law as changed.
I have no worries about you passing the test as diligent as you are. All you need is 80% and I’m guessing you will do much better than that. Feel free to check back as needed.