Having been the guy who got a couple of F's, and retook the exams in Sept and passed them to continue to my next years of studies and eventually my BSc I can say.. no! Do the work. Deserve the A/B/C. Get the A/B/C. I don't believe I'm the only one that suspects how the test will go, knows what the test result will be once I see the question, and know what I should have done to get that A/B/C mark.
I get it that shit happens in life (imagine someone having exams two days after they buried a father/mother/brother/sister), now THAT person, yeah, boost their results by 'one step' because if they got a 40% going through THAT, then they would have gotten 60% in a normal/BAU situation.
But don't hand out degrees to people who don't deserve them. It dilutes the degrees of those who do.