If the sampling is carried out at rate higher than twice the highest frequency of the original single (fmax), then it is possible to receive the original signal from the sampled signal by passing it through
1
A high-pass filter with the cut-off frequency equal to fmax
2
A low-pass filter with the cut-off frequency equal to fmax
3
A high-pass filter with the cut-off frequency greater than fmax
4
A low-pass filter with the cut-off frequency lesser than fmax