As shown in the figure, BC and BA intersect at point B, BD bisects angle ABC, CD parallel AB, if angle BCD = 70.0, then the degree of angle CDB is ()
Choices:
A:55°
B:50°
C:45°
D:30°
Please directly answer the question and provide the correct option letter, e.g., A, B, C, D.
Question: As shown in the figure, BC and BA intersect at point B, BD bisects angle ABC, CD parallel AB, if angle BCD = 70.0, then the degree of angle CDB is ()
Choices:
A:55°
B:50°
C:45°
D:30°
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, BC and BA intersect at point B, BD bisects angle ABC, CD parallel AB, if angle BCD = 70.0, then the degree of angle CDB is ()
Choices:
A:55°
B:50°
C:45°
D:30°