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Let z and omega be complex numbers such ...

Let z and omega be complex numbers such that `barz+ibar(omega) = 0 ` and `arg(zomega) = pi` then arg(z) equals to

A

`frac{3pi}{4}`

B

`frac{pi}{2}`

C

`frac{pi}{4}`

D

`frac{5pi}{4}`

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