瑶湖西站
艾溪湖西站
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 瑶湖西站 and 艾溪湖西站 (except for this two stops)? 
A) 3 
B) 20 
C) 22 
D) 11 
