There are so many variables here I couldn't even begin to answer but I will take a stab and say A because that student is most likely fiscally responsible and p

There are so many variables here I couldn't even begin to answer but I will take a stab and say A because that student is most likely fiscally responsible and proven they can juggle multiple responsibilities and still make progress towards a goal. These typically tend to be very productive members of society. In B's case, this also may be true, but I am less prone to have the same expectations since your university schooling offers you entirely what you decide to get out of it: meaning you can slack off and only study for the test, and forget it as soon as you step outside in the real world, or you can remember it all and excel. Now I am not saying with A you can't also slack off in school and not get anything, but on average I would say a working student values their education more than a non-working student since they have a larger motivator and a early reality check of what life is really like.