Take Quiz D Question 14 1 pts The following table shows the total benefits and total costs of hiring security guards at a large department store. The total benefits represent the amount of theft prevented and the total costs represent the wages to be paid to the guards. What is the marginal cost of hiring the 2nd guard? Number of total guards Total Benefits Total Costs 1 $5,000 $3000 2 $8500 $6000 3 $10,000 $9000 4 $11,000 $12000 O $14500 O $6000 O $3000 O $2500