What Environmental Problem Did the "Montreal Protocol" Seek to Address

What environmental problem did the "Montreal Protocol" seek to address?

A) A reduction of chlorofluorocarbons (CFC) production and use implicated in the thinning of the ozone layer
B) A moratorium on the use of high sulfur coal implicated in acid rain
C) The need for the United States to establish an Environmental Protection Agency (EPA)
D) Due process procedures for litigants in environment justice lawsuits