听力原文： China announced Sunday its decision to lift retail diesel and gasoline prices for the first time in eight months, while setting up a mechanism to offer some subsidies to disadvantaged communities and public service sectors.
The recipients of the subsidies include grain growers, fishermen and fishing firms operating and fanning offshore or in inland areas, using oil-driven fishing boats, state-owned forestry enterprises and nurseries of forestry centers, urban public transportation firms, said the commission.
It said the government will pay a number of subsidies directly to grain growers to reduce the impact of the price hikes of diesel oil and chemical fertilizers and other agricultural production materials.
For operators of rural passenger shipping business, the commission said the government will reduce the impact mainly through such measures as adjusting the charges of transportation, and offering proper amount of subsidies to those in difficulty.
The commission said local governments will offset the increased financial burden on taxi drivers in the urban areas mainly through readjusting the charges of transportation and imposing surcharge on fuel oil.
The Chinese government has ordered various localities to implement the measures on subsidies while price regulators at various levels should improve inspection and supervision of prices of processed oil to maintain the stability of the oil prices.
(4)

A. They will remain stable.
B. They will be raised.
C. They have been changing all the time.
D. They are determined directly by the supply and demand of the market.