[单项选择]

One way for people to cut back on oil use is to switch to other types of fuel. Because wood is a renewable resource and can always be kept in constant supply, the use of wood instead of oil for home heating would be one way to assure the availability of energy resources in the future.
The argument above would be most seriously weakened if which of the following were true（）

A. In every country that uses wood for heating, wood is used to provide only part, not all, of the heat for a home
B. Every country that has ever used wood for heating has depleted its forests before the forests were able to regenerate themselves
C. Every country that has used wood for home heating has done so only because it possessed a limited amount of other natural resources
D. Many countries that use wood primarily for heating have a high incidence of fires that are due to improperly installed wood stoves
E. In some countries the wood that would be used for home heating is owned by the government