If x(n)=xR(n)+jxI(n) is a complex sequence whose Fourier transform is given as X( )=XR( )+jXI( ), then what is the value of XR( )?

( sum_{n=- }^ )x R (n)cos n-x I (n)sin n

( sum_{n=0}^ )xR (n)cos n-xI (n)sin n

( sum_{n=0}^ )xR (n)cos n+xI (n)sin n

( sum_{n=- }^ )xR (n)cos n+xI (n)sin n

( sum_{n=- }^ )xR (n)cos n-xI (n)sin n

If x(n)=xR(n)+jxI(n) is a complex sequence whose Fourier transform is

1.	If x(n)=x_R(n)+jx_I(n) is a complex sequence whose Fourier transform is given as X( )=X_R( )+jX_I( ), then what is the value of X_R( )?
A.	( sum_{n=0}^ )x<sub>R</sub> (n)cos n-x<sub>I</sub> (n)sin n
B.	( sum_{n=0}^ )x<sub>R</sub> (n)cos n+x<sub>I</sub> (n)sin n
C.	( sum_{n=- }^ )x<sub>R</sub> (n)cos n+x<sub>I</sub> (n)sin n
D.	( sum_{n=- }^ )x<sub>R</sub> (n)cos n-x<sub>I</sub> (n)sin n
Answer» D. ( sum_{n=- }^ )x<sub>R</sub> (n)cos n-x<sub>I</sub> (n)sin n