When, and on what fault, was Canada's greatest earthquake, for which we have a seismic record?
A) magnitude 9.0, January 26, 1700, Cascadia Subduction Zone
B) magnitude 5.9, November 25, 1988, Grenville Fault
C) magnitude 7.6, February 28, 2001, Cascadia Subduction Zone
D) magnitude 8.1, August 22, 1949, Queen Charlotte Fault
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