D Question 3 5 pts The table below shows the total benefits and costs that Geralt of Rivia gets for a given number of monsters hunted. Assume Geralt always knows how to maximizes his economic profits. Use this information for all questions with the title "Monster Money". Monsters Hunted Total Benefit 10 18 3 24 4 28 30 (Monster Money) Assume the marginal cost of each monster is $5. Which of the following would make Geralt change his optimal number of monsters hunted? O He got robbed of $10 last night. O His marginal benefit of each monster decreased by $2. O Both (a) and [b) ( Neither (a) nor (b)