Quiz - California Introduction Question 5 of 25 Registered Domestic Partners who are not legally married file in what combination for their federal and California returns? Assume no dependents are present. o They file separate returns as Single for both sets of returns. They file a joint federal but separate, single California returns. They file jointly for both sets of returns. They file separate Single returns for the federal, but Married/RDP Filing Jointly or Married/RDP Filing Separately for the California return. Next