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If z(1),z(2),z(3),z(4) are two pairs of...

If ` z_(1),z_(2),z_(3),z_(4)` are two pairs of conjugate complex numbers, then `arg(z_(1)/z_(3)) + arg(z_(2)/z_(4))` is

A

0

B

`pi/2`

C

`(3pi)/4`

D

`pi`

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A
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