Filters with the ________ characteristic are useful when a rapid roll-off is required because it provides a roll-off rate greater than â€“20/dB/decade/pole.

Filters with the ________ characteristic are useful when a rapid roll-

1.	Filters with the ________ characteristic are useful when a rapid roll-off is required because it provides a roll-off rate greater than â€“20/dB/decade/pole.
A.	Butterworth
B.	Chebyshev
C.	Bessel
D.	-
Answer» C. Bessel