1. ${\log }_{k^{\left(\frac{a^n}{b^n}\right)}}+{\log }_{k^{\left(\frac{b^n}{c^n}\right)}}+{\log }_{k^{\left(\frac{c^n}{a^n}\right)}}=?$

• A. $\frac{a}{b}$
• B. $\frac{a}{b}$
• C. $\frac{a}{b}$
• D. $\frac{a}{b}$

Post your comments here: