Oklahoma Municipal I (Oklahoma Municipal Fund Class I) fond

The fund normally invests at least 80% of its net assets (including any borrowings for investment purposes) in municipal securities that pay interest free from (a) federal income taxes, including the federal alternative minimum tax, and (b) Oklahoma personal income taxes. It may invest up to 30% of its net assets in U.S. territorial obligations, the interest on which is exempt from federal and Oklahoma personal income taxes.