Here Are Three Things You Could Do If You Choose

Here are three things you could do if you choose not to go to class one day next week: sleep later (you value this at $15) ,hang out with friends (you value this at $14) ,or go in to work (you could earn $12 during class) .The opportunity cost of going to class is

A) $12, because this is the only alternative of the three where you actually receive a monetary payment.
B) $12, because this is the lowest valued alternative forfeited.
C) $15, because this is the highest valued alternative forfeited.
D) $41, because this is the total dollar sum of the alternatives forfeited.