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Select and write the correct answer from the given alternatives in each of the following:If `(2,-6)`and `(-3,-5)`lie on the locus `ax+by=1`,then a and b are

A

`1/28,5/28`

B

`-1/28,5/28`

C

`-11/8,-5/8`

D

`-1/28,-5/28`

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