some of the shading patterns are nearly indistinguishable from one another. (could be the actual cause of B)
Thanks for playing the game and for the feedback. Although I wasn't planning on working on this game anymore as it was just some testing and learning for me. But this issue you pionted out can help me be more aware next time working on a different title. And for the answer for A there are 3 the last one being the infinite loop.