What is the Fourier transform of rectangular window of length L?

1.	What is the Fourier transform of rectangular window of length L?
A.	$\frac{sin⁡(\frac{ωL}{2})}{sin⁡(\frac{ω}{2})} e^{jω(L+1)/2}$
B.	$\frac{sin⁡(\frac{ωL}{2})}{sin⁡(\frac{ω}{2})} e^{jω(L-1)/2}$
C.	$\frac{sin⁡(\frac{ωL}{2})}{sin⁡(\frac{ω}{2})} e^{-jω(L-1)/2}$
D.	None of the mentioned
Answer» D. None of the mentioned

Discussion

1.	What is the Fourier transform of rectangular window of length L?
A.	\(\frac{sin⁡(\frac{ωL}{2})}{sin⁡(\frac{ω}{2})} e^{jω(L+1)/2}\)
B.	\(\frac{sin⁡(\frac{ωL}{2})}{sin⁡(\frac{ω}{2})} e^{jω(L-1)/2}\)
C.	\(\frac{sin⁡(\frac{ωL}{2})}{sin⁡(\frac{ω}{2})} e^{-jω(L-1)/2}\)
D.	None of the mentioned
Answer» D. None of the mentioned