(Table: Security in a Residential Community) the Table Security in a Residential

Multiple Choice

(Table: Security in a Residential Community) The table Security in a Residential Community shows the total cost of hiring a 24-hour security service in a community of 100 residents and each individual resident's total benefit from the service.The marginal cost of hiring the third security guard is ________, and the marginal social benefit is _.

A) $150; $200
B) $450; $1,800
C) $150; $600
D) $450; $600