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If p,q,r are in A.P. and are positive, the roots of the quadratic equation `px^(2) + qx + r = 0 ` are real for `:`

A

`|(r)/(p)-7| geq 4 sqrt(3)`

B

`|(p)/(r)-7|lt4 sqrt(3)`

C

all p and r

D

no p and r

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The correct Answer is:
D
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