ring) used--???(A) to assure the quality and appropriateness of care, particularly with respect to well-baby care, well-child care, and immunizations provided under the plan, and???(B) to assure access to covered services, including emergency services.???(b) GENERAL DESCRIPTION OF ELIGIBILITY STANDARDS AND METHODOLOGY-???(1) ELIGIBILITY STANDARDS-???(A) IN GENERAL- The plan shall include a descrip