What is the Fourier transform of the signal x(n)=a|n|, |a|<1?

• A. \(\frac{1+a^2}{1-2acosω+a^2}\)
• B. \(\frac{1-a^2}{1-2acosω+a^2}\)
• C. \(\frac{2a}{1-2acosω+a^2}\)
• D. None of the mentioned