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if a,b, c, d and p are distinct real num...

if a,b, c, d and p are distinct real number such that
`(a^(2) + b^(2) + c^(2))p^(2) - 2p (ab + bc + cd) + (b^(2) + c^(2) + d^(2)) lt 0` then a, b, c, d are in

A

are in A.P.

B

are in G.P.

C

are in H.P.

D

none of these

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The correct Answer is:
B
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