Multiple choice:The figure shows an AOV network. Which one of the following is

The figure shows an AOV network. Which one of the following is a possible topological order of the network? @[ D](2)
A. ACBDEF
B. ABCEFD
C. ABCDFE
D. ABCEDF




A.ACBDEF
B.ABCEFD
C.ABCDFE
D.ABCEDF


answer：D