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Let M be a 3xx3 matrix satisfying M[0 1 ...

Let `M` be a `3xx3` matrix satisfying `M[0 1 0]=M[1-1 0]=[1 1-1],a n dM[1 1 1]=[0 0 12]` Then the sum of the diagonal entries of `M` is _________.

A

7

B

8

C

9

D

6

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The correct Answer is:
c
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