What is the ecological footprint of Canadians compared to the global average, as mentioned by Professor Erika Simpson in the lecture?
A. Canadians have a smaller ecological footprint than the United States.
B. Canadians are among the world's worst offenders in terms of ecological footprint.
C. Canadians have a negligible ecological footprint due to their cold climate.
D. Canadians have the smallest ecological footprint globally.
E. Canadians have an ecological footprint comparable to African countries.