The author implies that the FourteenthAmendment might not have been enacted if ______
A、Congress' authority with regard to legislating civil rights had not been challenged
B．the framers had anticipated the SupremeCourt is ruling inBrown v.Board ofEducation
C．the framers had believed that it would be used in deciding cases of discrimination involving non-racial groups
D．most state governments had been willing to protect citizens' civil fights