Mark which of the following statements is true To combat ali

Mark which of the following statements is true. To combat aliasing A low-pass filter is used and the filtered signal is sampled at a slightly lower than the Nyquist rate A band-pass filter is used and the filtered signal is sampled at a slightly higher than the Nyquist rate A low-pass filter is used and the filtered signal is sampled at a slightly higher than the Nyquist rate

Solution

to avoid aliasing we used anti alaising filter, which is basicaly Low pass filter, then the signal is sampled slightly higher than the nyquirst rate.

so the 3rd statement is true