It's holiday time, and Jason went into the wrapping business. It's been a busy day, and he wants to go home. He figured out that the cost of wrapping an additional present is $0.50. However, the benefit is that he charges $1.00 to wrap a gift. What is Jason examining by looking at his options?
1 marginal analysis
2 cost-benefit analysis
3 marginal utility
4 cost opportunity
