I'm not 100% sure... but I would say B.
A triangle’s angles are equivalent to 180 degrees so the third angle would have to equal 20 degrees
Enlightment and other things
Answer:
on Hudson Bay and extending for 8 million square km (3 million square miles) over eastern, central, and northwestern Canada from the Great Lakes to the Canadian Arctic and into Greenland, with small extensions into northern Minnesota, Wisconsin, Michigan, and New York, U.S.
