Multiple Choice
Use the following to answer question: 
-(Table: Security in a Residential Community) Use Table: Security in a Residential Community.Suppose that the residential community has 100 residents.The marginal cost of hiring the fourth security guard is _____,and the marginal social benefit is _____.
A) $150;$200
B) $150;$100
C) $150;$600
D) $600;$1,900
Correct Answer:

Verified
Correct Answer:
Verified
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