Cho \(P={{ \log }_{{{a}^{4}}}}{{b}^{2}}, \, \, \,0
A. \(P=-\frac{1}{2}{{\log }_{a}}(-b)\).               
B. \(P=2{{\log }_{a}}(-b)\).                    
C. \(P=-2{{\log }_{a}}(-b)\).                   
D. \(P=\frac{1}{2}{{\log }_{a}}(-b)\).

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