PROVIDENCE, R.I. (AP) — Rhode Island's state-run health benefits marketplace released the monthly premiums Tuesday for the 28 plans it will offer for individuals and small businesses under the federal health care overhaul. HealthSource RI Director Christine Ferguson released the rates for the 12 individual and 16 small group plans during a meeting of the advisory board for the marketplace, known as an exchange. Three providers — Blue Cross & Blue Shield of Rhode Island, UnitedHealthcare and Neighborhood Health Plan of Rhode Island — are selling plans on the exchange for 2014. Enrollment opens Oct. 1.