With no explanation, chose the best option from "A" or "B". Rob's job requires him to get certified in CPR every two years, so he must get certified before the deadline. Rob wants to get his CPR certification.

A: Rob finds a guy on Craig's list who sells CPR cards for thirty dollars so Rob doesn't have to waste time in a CPR class.
B: Rob contacts the American Red Cross and spends fifty dollars and a Saturday getting his CPR card.
B.