Use the Following to Answer Questions -(Table: Marginal Benefit from Additional Streetlights)Use Table: Marginal Benefit from of }

Multiple Choice

Use the following to answer questions : $\begin{array}{l}\begin{array}{lcc}\hline\text { Quantity of } & \text { Dave's } & \text { Art's } \\\text { Streetlights in the } & \text { Individual } & \text { Individual } \\\text { Neighbourhood } & \text { Marginal Benefit } & \text { Marginal Benefit }\\\hline0&&\\1&\$ 15 & \$ 20 \\2&10 & 15 \\3&5 & 10 \\4&2 & 3\\\hline \end{array}\\\end{array}$

-(Table: Marginal Benefit from Additional Streetlights) Use Table: Marginal Benefit from Additional Streetlights.Suppose that the marginal cost of installing a streetlight is $6.What is the socially optimal number of streetlights in the neighbourhood?

A) 1
B) 2
C) 3
D) 4