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If z1,z2 are conjugate complex numbers a...

If `z_1,z_2` are conjugate complex numbers and `z_3,z_4` are also conjugate, then `arg(z_3/z_2)-arg(z_1/z_4)` is equal to

A

0

B

`pi`

C

`pi/2`

D

None if these

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A
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