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Select and write the correct answer from the given alternatives in each of the following:If`a^2+b^2+c^2=0` and `|(b^2+c^2,ab,ac),(ab,c^2+a^2,bc),(ac,bc,a^2+b^2)|`=`ka^2b^2c^2`,then k=

A

1

B

2

C

3

D

4

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