What does a high-pass filter do to a signal?

A) Allows low frequencies to pass and attenuates high frequencies

B) Allows high frequencies to pass and attenuates low frequencies

C) Inverts the signal

D) Amplifies all frequencies equally

Answer: B) Allows high frequencies to pass and attenuates low frequencies

Explanation: A high-pass filter allows signals with frequencies higher than a certain cutoff frequency to pass through while attenuating signals with frequencies lower than the cutoff. This is useful for removing low-frequency noise.