Which of the following is a disadvantage of using IIR filters?
A) They can approximate any desired frequency response.
B) They are computationally efficient.
C) They can become unstable under certain conditions.
D) They have a finite impulse response.
Answer: C) They can become unstable under certain conditions.
Explanation: IIR filters can become unstable if not designed properly, particularly due to feedback in the filter design, which can lead to oscillations or divergent output signals
