Hi. I need help with something. I know how embedded conditionals work. For example

A---> (B---->C) then it becomes A and B ----->C

But what happens if its (A--->B) unless C

Negating sufficient, does it become (B/----->A/)----->C. Or conversely, C/------>(A----->B)

And then does it become C/ and A---->B. Its a question from PT 74 S2 Q24. Its really tripping me up