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If in the expansion of (2^x+1/4^x)^n , T...

If in the expansion of `(2^x+1/4^x)^n , T_3/T_2 = 7` and the sum of the co-efficients of `2nd` and `3rd` terms is `36,` then the value of `x` is

A

`(1)/(2)`

B

`-(1)/(2)`

C

`-(1)/(4)`

D

`-(1)/(3)`

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The correct Answer is:
D
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