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If the system of equations : x + 4ay+az ...

If the system of equations : `x + 4ay+az =0, x + 3by+ bz = 0 , x + 2cy + cz =0` has a non a non - zero solution ,then a,b,c are in :

A

are in A.P

B

are in G.P

C

are in H.P

D

satisfy a+2b+3c=0

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The correct Answer is:
C
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