What Has Been Suggested by the World Health Organization to Address

What has been suggested by the World Health Organization to address the problem of environmental damage caused by tobacco?

A) Tobacco companies should improve the technology by which cigarettes are made.
B) Tobacco companies should encourage the consumption of tobacco in forms that allow it to be eaten rather than smoked.
C) Tobacco companies should be made responsible for verifiable environmental damage.
D) Tobacco companies need to undertake a public relations campaign encouraging the use of ashtrays.