When did the 100 states sign the treaty under UN to control the shipment of toxic and nuclear wastes?

When did the 100 states sign the treaty under UN to control the shipme

1.	When did the 100 states sign the treaty under UN to control the shipment of toxic and nuclear wastes?
A.	1980
B.	1984
C.	1987
D.	1989
Answer» E.