If ||(x+1,x+2,x+a),(x+2,x+3,x+b),(x+3,x+...

If `||(x+1,x+2,x+a),(x+2,x+3,x+b),(x+3,x+4,x+c)|=0` then a,b,c are

A

equal

B

in A.P

C

in G.P

D

in H.P

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The correct Answer is:

B

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