What Is the Purpose of the Formulation Stage of the Policymaking

What is the purpose of the formulation stage of the policymaking process?

A) to make sure that the policy will be effective both in solving an issue and in terms of cost to taxpayers
B) to ensure that all possible courses of action have been considered before choosing a preferred plan
C) to get the president's approval of a bill so the policy will have the force of law and can be enforced
D) to allow an executive agency to adopt the law into policy that can be enforced by officials