奥体中心站
森林公园站
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 奥体中心站 and 森林公园站 (except for this two stops)? 
A) 9 
B) 22 
C) 21 
D) 27 
