The Aggregate Emission- Reduction Targets of the Kyoto Protocol Were

The aggregate emission- reduction targets of the Kyoto Protocol were achieved (from 1990 to 2004) largely as a result of

A) significant emission reductions by Asian countries, due to the Asian economic crisis.
B) successful implementation of emission- reduction policies by all signatory countries.
C) a large- scale shift from fossil fuel to nuclear generated electricity in North America.
D) significant emission reductions by former Soviet Union countries, due to sharp declines in their economic activity.
E) careful coordination of policies among signatory countries.