I think it is B, but I'm not fully sure.
It c) because it 56 out of 100
The answer is B. The last too are both negative. So they are not true numbers.
Each Interior Angle = 180 - (360 / number of sides)
# of sides = -360 / (Each Interior Angle -180)
# of sides = -360 / (144 -180)
# of sides = -360 / -36
# of sides = 10
