If we consider a sequence of FIR filer with system function Hm(z)=Am(z), then what is the definition of the polynomial Am(z)?

\(1+\sum_{k=0}^m α_m (k)z^{-k}\)

\(1+\sum_{k=1}^m α_m (k)z^{-k}\)

\(1+\sum_{k=1}^m α_m (k)z^k \)

\(\sum_{k=0}^m α_m (k)z^{-k}\)

If we consider a sequence of FIR filer with system function Hm(z)=Am(z

1.	If we consider a sequence of FIR filer with system function Hm(z)=Am(z), then what is the definition of the polynomial Am(z)?
A.	\(1+\sum_{k=0}^m α_m (k)z^{-k}\)
B.	\(1+\sum_{k=1}^m α_m (k)z^{-k}\)
C.	\(1+\sum_{k=1}^m α_m (k)z^k \)
D.	\(\sum_{k=0}^m α_m (k)z^{-k}\)
Answer» C.