(Figure: Traffic Lights in Plymouth) Use Figure: Traffic Lights in Plymouth.Plymouth has 1,000 residents.Each of the residents has the same individual marginal benefit per traffic light.If the town's population doubles and the new residents share the identical individual marginal benefit of the existing residents,the socially efficient quantity of traffic lights will:

A) stay the same.
B) fall.
C) rise.
D) fall to zero.

Individual Marginal Benefit

The additional benefit received by an individual from consuming one more unit of a good or service.

Traffic Lights

Traffic lights are signaling devices positioned at road intersections and pedestrian crossings to control the flow of traffic, using a universal color code to signal stop, go, and caution.

Socially Efficient

A situation in which resources are allocated in the most beneficial way from the perspective of society as a whole, considering both private and external costs and benefits.