I would say not to worry to much the thing important thing is to get the FEEL of the Ethics and for sure any question will give you some hint and you will be able to remove options so get to the answer. I never opened CFAI for Ethics though its widely recommended on this forum. I only used Schweser and Scored above 70% on Ethics…
What helped me a lot was to memorize the outline. Also realize that there’s some stuff you’re just not going to get right, and that’s okay.