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1. $x^{x} y^{y} = 1$

A. $\frac{1 + \ln x}{1 + \ln y}$
B. $\frac{1 + \ln x}{1 + \ln y}$
C. $\frac{1 + \ln x}{1 + \ln y}$
D. $\frac{1 + \ln x}{1 + \ln y}$

Answer: Option B

Explanation:

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