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Which of the following complex compound(s) is/are paramagnetic and low spin?
(I) \( \mathrm{K}_{3}\left[\mathrm{Fe}\left(\mathrm{CN}_{6}\right)\right] \)
(II) \( \left[\mathrm{Ni}(\mathrm{CO})_{4}\right]^{0} \)
(III) \( \left[\mathrm{Cr}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+} \)
(IV) \( \left[\mathrm{Mn}(\mathrm{CN})_{6}\right]^{4-} \)
\( \mathrm{P} \)
Choose the correct code :
(a) I only
(b) II and III
(c) I and IV
(d) IV only
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