-Which of the Following Best Explains the Trends in Sulfur

-Which of the following best explains the trends in sulfur emissions in England since 1970?

A) The population of England increased rapidly during the latter half of the 20th century,so per capita emissions decreased even though total emissions increased.
B) Regulations and new technology were employed to reduce sulfur emissions.
C) Sulfur emissions is inversely proportional to per capita income because wealthier people do not need to use sulfur products.
D) England began running out of sulfur resources.