Which of the Following Is a Double-Barreled Hypothesis

Which of the following is a double-barreled hypothesis?

A) Taxpayers tend to accept taxes that both go for services they directly receive road repair) and are collected in a more subtle manner cigarette and casino taxes) .
B) Taxpayers tend to object strongly to new taxes when economic conditions are declining and to ones that wealthiest people do not have to pay.
C) Generally speaking, taxpayers are more likely to support tax hikes when the government is seen as efficient and elected officials win office by a large majority.
D) Taxpayers who tend to oppose increases in tax rates for high-income families generally support market- oriented economic tax breaks.