If alpha and beta are the roots of the e...

If `alpha` and `beta` are the roots of the equation `x^(2)-x-1=0` , then what is `(alpha^(2)+beta^(2))/((alpha^(2)-beta^(2))(alpha-beta))` equal to ?

A

`2//5`

B

`3//5`

C

`4//5`

D

None of the above

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