Convert the following in the polar form:...

Convert the following in the polar form: `frac{1+7i}{(2-i)^2}`

A

sqrt2(cos(frac{3pi}{4})+isin(frac{3pi}{4))`

B

`sqrt2(cos(frac{pi}{4})+isin(frac{pi}{4}))`

C

`cos(frac{3pi}{4})+isin(frac{3pi}{4})`

D

`cos(frac{pi}{4})-isin(frac{pi}{4})`

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