Let \( z \) be a purely imaginary number such that \( \operatorname{Im}(z)0 \). Then arg \( (z) ...
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0Let \( z \) be a purely imaginary number such that \( \operatorname{Im}(z)0 \). Then arg \( (z) \) is equal to
(A) \( \pi \)
(B) \( 0 \)
(C) \( \pi / 2 \)
(D) \( -\pi / 2 \)
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