II. Choose the best topic sentence from the groups blow.
A.
A breakthrough in one of these areas will hopefully provide a means of relieving both the overstretched oil market and the environment.
B.
Researchers in the automobile industry are experimenting with different types of engines and fuels as alternatives to the conventional gasoline engines.
C.
One new type of engine, which burns diesel oil instead of gasoline, has been available for several years.
D.
.Finally, several automobile manufacturers are experimenting with methanol, which is a mixture of gasoline and methyl alcohol, as an automobile fuel.
E.
A further type is the gas turbine engine, which can use fuels made from gasoline, diesel oil, kerosene and other petroleum distillates.
F.
The increasing depletion of oil reserves, along with environmental concerns, have prompted some radical developments in car design over the past few years.