Which acupoint is the beginning and ending point of the ST meridian in the following points?
A.
Yinbai (SP1) ,Dabao (SP21)
B.
Chengqi (ST1) , Lidui (ST45)
C.
Tinghui (GB2) ,Zuqiaoyin (GB44)
D.
Shangyang (LI1) , Yingxiang (LI20)
E.
Zhongfu (LU1) , Shaoshang (LU11)