As shown in the figure, a parallel b, angle 1 = 158.0, angle 2 = 42.0, angle 4 = 50.0. Then angle 3 = ()
Choices:
A:50°
B:60°
C:70°
D:80°
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: As shown in the figure, a parallel b, angle 1 = 158.0, angle 2 = 42.0, angle 4 = 50.0. Then angle 3 = ()
Choices:
A:50°
B:60°
C:70°
D:80°
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, a parallel b, angle 1 = 158.0, angle 2 = 42.0, angle 4 = 50.0. Then angle 3 = ()
Choices:
A:50°
B:60°
C:70°
D:80°