If alpha, beta are the roots of ax^(2)+b...

If `alpha, beta` are the roots of `ax^(2)+bx+c=0 and alpha+k, beta+k` are the roots of `px^(2)+qx+r=0`, then `k=`

A

`-1/2(a/b-p/q)`

B

`(a/b-p/q)`

C

`1/2(b/a-q/p)`

D

(ab-pq)

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The correct Answer is:

C

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