It can be inferred from the text that the retail price of petrol will go up dramatically if ______.

A．oil-price shocks are less shocking now
B．inflation seems irrelevant to oil-price shocks
C．energy conservation can keep down the oil prices
D．the price rise of crude oil leads to the shrinking of heavy industry

A．heavy industry becomes more energy-intensive
B．income loss mainly results from fluctuating crude oil prices
C．manufacturing industry has been seriously squeezed
D．oil price changes have no significant influence on GDP