What is the value of XR(ω) given X(ω)=\(\frac{1}{1-ae^{-jω}}\),|a|

• A. \(\frac{asinω}{1-2acosω+a^2}\)
• B. \(\frac{1+acosω}{1-2acosω+a^2}\)
• C. \(\frac{1-acosω}{1-2acosω+a^2}\)
• D. \(\frac{-asinω}{1-2acosω+a^2}\)