The Experience Surrounding the Creation and Adoption of Common Core

The experience surrounding the creation and adoption of Common Core standards illustrates which of the following?

A) The national government has the ability to implement a single set of educational standards in order to provide benefits for the country.
B) The administration can offer grant money to the states if they adopt common learning goals.
C) Policies change, and the standards outlined in Common Core have been replaced by those contained in the No Child Left Behind program.
D) The federal government has few incentives to encourage the states to adopt the new standards.