Consider Pigou's example where the cost of the upper route is 1 and the cost of the lower route is 2x. What is the efficient share of the traffic that should take the upper route? Here efficient means minimizing aggregate cost.

1/2

1

3/4

2/3

What share of the traffic will take the upper route in the Nash equilibrium?

1/2

1

3/4

2/3

The price of anarchy in this example is

1/2

1

3/4

2/3

What can you say about the price of anarchy without computing anything in this example?

4/3

=4/3

4/3

none of the above