单选题What does the world bank study show?A The use of tobacco results in a global net loss of US $200 billion per year in the developing world.B Economic loss caused by tobacco in the developing countries equals that of the developed countries.C Huge amount

The use of tobacco results in a global net loss of US $200 billion per year in the developing world.

Economic loss caused by tobacco in the developing countries equals that of the developed countries.

Huge amount of economic loss has been incurred by closing down tobacco factories in the developing countries.

The use of tobacco results in a global net loss of US $200 billion per year, but it does not affect the quality of life of smokers or their families.