In the binomial expansion of (a - b)^n ...

In the binomial expansion of `(a - b)^n , n ge 5 ` the sum of the 5th and 6th term is zero , then find `a/b`

A

`(5)/(n-4)`

B

`(6)/(n-5)`

C

`(n-5)/(6)`

D

`(n-4)/(5)`

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The correct Answer is:

D

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