What is the transfer function of magnitude squared frequency response of the normalized low pass Butterworth filter?

What is the transfer function of magnitude squared frequency response

1.	What is the transfer function of magnitude squared frequency response of the normalized low pass Butterworth filter?
A.	$\frac{1}{1+(s/j)^{2N}}$
B.	$1+(\frac{s}{j})^{-2N}$
C.	$1+(\frac{s}{j})^{2N}$
D.	$\frac{1}{1+(s/j)^{-2N}}$
Answer» B. $1+(\frac{s}{j})^{-2N}$

1.	What is the transfer function of magnitude squared frequency response of the normalized low pass Butterworth filter?
A.	\(\frac{1}{1+(s/j)^{2N}}\)
B.	\(1+(\frac{s}{j})^{-2N}\)
C.	\(1+(\frac{s}{j})^{2N}\)
D.	\(\frac{1}{1+(s/j)^{-2N}}\)
Answer» B. \(1+(\frac{s}{j})^{-2N}\)