A.
Paths marked with C,D,E,K,J,P,L,N,O,T are valid标注为C,D,E,K,J,P,L,N,O,T的通路有效
B.
Paths marked with C,D,E,K,J,P,L,W,S,T are valid标注为C,D,E,K,J,P,L,W,S,T的通路有效
C.
Paths marked with C,D,F,K,U,P,I,L,W,S,T are valid标注为C,D,F,K,U,P,I,L,W,S,T的通路有效
D.
Paths marked with C,E,F,K,J,P,W,V,S,T are valid标注为C,E,F,K,J,P,W,V,S,T的通路有效