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If a,b,c are in AP and a^(2),b^(2),c^(2)...

If a,b,c are in AP and `a^(2),b^(2),c^(2)` are in HP, then

A

`a=b=c`

B

`2b=3a+c`

C

`b^(2)=sqrt((ac)/(8))`

D

None of these

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