Question: What is the correct constraint for node 2 in the following network diagram? A. X 12 + X 23 = 100 B. X 12 X
What is the correct constraint for node 2 in the following network diagram?

A. X12 + X23 = 100
B. X12 X23 100
C. X12 + X23 100
D. X12 X23 = 100
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