In \triangle A B C, D is a point on side \overline{A C} such that B D=D C and \angle B C D measures 70^{\circ}. What is the degree measure of \angle A D B ?
Answer Choices
A. 100
B. 120
C. 135
D. 140
E. 150
Answer Choices
A. 100
B. 120
C. 135
D. 140
E. 150