With regard to international efforts to protect the environment, the Clinton administration

With regard to international efforts to protect the environment, the Clinton administration
 
  a. opposed the 1992 Rio de Janeiro Treaty as an attack on American industry.
  b. refused to fulfill the previous Bush administration's pledge to support the war against global warming.
  c. signed the 1997 Kyoto protocol on carbon dioxide emissions but never submitted it for ratification to theRepublican-controlled Senate.
 d. showed its disdain for the 1997 Kyoto protocol, which it had signed only to mollify the nation'senvironmentalists, by secretly lobbying against its ratification in the Senate.