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For the given graph the incidence matrix `A' is given by—

1. -1 -1 0
  0 1 0
  -1 0 -1
2. 1 0 -1
  1 1 0
  0 -1 1
3. 1 -1 0
  0 1 1
  -1 0 -1
4. None of these

Correct Option: C

Since the incidance matrix is given by