坛子口站
西站南广场站
Please solve the multiple choice problem and put your answer (one of ABCD) in one "\boxed{}". According to the subway map, how many intermediate stops are there between 坛子口站 and 西站南广场站 (except for this two stops)? 
A) 11 
B) 20 
C) 0 
D) 27 
