南站南广场站
秋浦河路站
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 南站南广场站 and 秋浦河路站 (except for this two stops)? 
A) 21 
B) 12 
C) 18 
D) 3 
