Contributing to the Success of Loophole Politics Prior to Passage

 Contributing to the success of loophole politics prior to passage of the 1986 tax bill was the 

A)  strong support of policy entrepreneurs such as Ralph Nader. 
B)  existence of low marginal rates to offset revenues lost through deductions. 
C)  decentralized structure of Congress. 
D)  existence of tariff revenues to offset revenues lost through deductions. 
E)  strong support of the conservative coalition and Ralph Nader.