The Problem of Asymmetric Shocks in Canada in the 2000s

The problem of asymmetric shocks in Canada in the 2000s

A) could be mitigated by appreciating the western currency against the eastern currency (if only separate currencies existed)
B) highlights the need for flexible exchange rates
C) was aggravated by increased inter-regional factor mobility
D) was solved in time for the 2010 Olympics
E) was solved by the secession of Quebec.