North Carolina's School Choice Program Gives Parents a Bigger Say

North Carolina's school choice program gives parents a bigger say over where their children go to school. To help with the choice, parents are mailed a sheet of paper listing the average of the math and reading scores for each school they could apply to. Providing this information is an example of a(n) :

A) push.
B) nudge.
C) shadow price.
D) incentive compatibility problem.