兴筑路站
观山西路站
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 兴筑路站 and 观山西路站 (except for this two stops)? 
A) 0 
B) 18 
C) 28 
D) 5 
