Tax Rates for the Wealthiest Americans, Particularly the Super-Wealthy, Have

Tax rates for the wealthiest Americans, particularly the super-wealthy, have dropped dramatically over the past three and a half decades, regardless of whether Republicans or Democrats are in control in Washington. What does this suggest?

A) Both Democrats and Republicans are in favor of lowering taxes for the wealthy.
B) Bribery is rampant in Washington.
C) The disturbance theory has influenced tax brackets over the past thirty years, as predicted.
D) The political influence of wealthy Americans has been fairly constant no matter which party has headed the government.
E) Revolving doors have not been effected by lobbyist reform legislation.