I'm working through the CC and I frequently have time during the problem sets to BR any questions that I've flagged. I've been using the extra time to go back on questions I'm not sure about. There have been times were I have been able to clarify my reasoning for AC being right/wrong and reach certainty but when I can't reach 100% certainty it isn't due to a lack of time, but rather a knowledge gap. Given this should I still be blind reviewing?
#help
#help Can someone clarify why C is right and D is wrong?