\( i^{2}+i^{4}+i^{6}+\ldots(2 n+1) \) terms \( = \) (A) \( -1 \) (B) 1 (C) \( -i \) (D) \( i \)

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\( i^{2}+i^{4}+i^{6}+\ldots(2 n+1) \) terms \( = \)
(A) \( -1 \)
(B) 1
(C) \( -i \)
(D) \( i \)
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