The Montreal Protocol Was an International Environmental Treaty _______________

The Montreal Protocol was an international environmental treaty _______________.

A) that banned the sale and export of products made of ivory
B) that banned the sale and export of invasive species
C) whose goal was to protect the ozone layer
D) whose goal was to ban the proliferation of nuclear weapons
E) that was not approved by the U.S.because many lawmakers did not believe in global climate change