Historically, U.S. commercial banks were barred from operating investment bank business as was ruled by_______________________. This act was overturned by_______________, which allows a commercial bank to operate both commercial and investment banking business. A: Glass-Steagall Banking Act; Dodd Frank Act B: Glass-Steagall Banking Act; Financial Services Modernization Act C: Financial Services Modernization Act; Glass-Steagall Banking Act D: Financial Services Modernization Act; Dodd Frank Act