If Y(z) is the z-transform of the output function, X(z) is the z-transform of the input function and H(z) is the z-transform of system function of the LTI system, then H(z)=?

If Y(z) is the z-transform of the output function, X(z) is the z-trans

1.	If Y(z) is the z-transform of the output function, X(z) is the z-transform of the input function and H(z) is the z-transform of system function of the LTI system, then H(z)=?
A.	( frac{Y(z)}{X(z)} )
B.	( frac{X(z)}{Y(z)} )
C.	Y(z).X(z)
D.	None of the mentioned
Answer» B. ( frac{X(z)}{Y(z)} )