会展中心站
鲁班路站
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 会展中心站 and 鲁班路站 (except for this two stops)? 
A) 9 
B) 21 
C) 16 
D) 15 
