As shown in the figure, it is known that in circle O, the central angle angle AOB = 100.0, then the angle of circumference angle ACB is equal to ().
Choices:
A:130°
B:120°
C:110°
D:100°
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: As shown in the figure, it is known that in circle O, the central angle angle AOB = 100.0, then the angle of circumference angle ACB is equal to ().
Choices:
A:130°
B:120°
C:110°
D:100°
Please first conduct reasoning, and then answer the question and provide the correct option letter, e.g., A, B, C, D, at the end.
Question: As shown in the figure, it is known that in circle O, the central angle angle AOB = 100.0, then the angle of circumference angle ACB is equal to ().
Choices:
A:130°
B:120°
C:110°
D:100°