A: The Sea remains free from ice from British Columbia to Bering Sea.
R: Air moving off the comparatively warm waters of North Pacific Drill gives the coastal areas of British Columbia a warmer climate.

A

Both A and R are individually true and R is the correct explanation of A

B

Both A and R are individually true but R is not the correct explanation of A

C

A is true but R is false

D

A is false but R is true.