单选题Vessels should maintain a sharp lookout，especially during December through March，when navigating the right whale’s only known calving grounds which lie off the coasts of（）.ANova ScotiaBMaine and MassachusettsCGeorgia and NE FloridaDCalifornia and Mexico
单选题
Vessels should maintain a sharp lookout，especially during December through March，when navigating the right whale’s only known calving grounds which lie off the coasts of（）.
A
Nova Scotia
B
Maine and Massachusetts
C
Georgia and NE Florida
D
California and Mexico
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