Answer:
B and 70 degrees
Step-by-step explanation:
Supplementary angles are equal to 180 degrees, while complementary angles are equal to 90 degrees. If both angles are already supplementary, they cannot also be complementary, so B is false.
Angle AOB is a straight line and also 180 degrees and angle AOC is 110 degrees. In order to get angle COB, you just need to subtract 110 from 180, giving you 70 degrees.
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