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If the fourth term in the binomial expan...

If the fourth term in the binomial expansin of `((2)/(x) + x^(log_(6) x))^(6) (x gt 0)` is `20 xx 8^(7)`, then the value of x is

A

`8^(2)`

B

`8^(3)`

C

`8`

D

`8^(-2)`

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