If the roots of both the equations px^2+...

If the roots of both the equations `px^2+2qx + r=0` and `qx^2-sqrt(pr)x+q=0` are real, then

A

`p=q`

B

`q^2=pr`

C

`p^2=qr`

D

`r^2 =pq`

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The correct Answer is:

B

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