If \( x=\frac{1}{2} \log _{k} b=\frac{1}{2} \log _{b} c=\frac{1}{4} \log _{c} d \), then \( \log...
If \( x=\frac{1}{2} \log _{k} b=\frac{1}{2} \log _{b} c=\frac{1}{4} \log _{c} d \), then \( \log _{k} d \) is
(A) \( 6 x^{3} \)
(B) \( 2 x^{3} \)
(C) \( 12 x^{3} \)
(D) None of these
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