A Sequence \(x\left[ n \right] = \cos \left[ {\frac{{\pi n}}{4}} \right]\) was obtained by sampling a continuous signal x(t) = cos (Ω0t) at a sampling rate of 1000 Hz. The two possible values of Ω0 that have resulted in sequence x[n] are
1
250 π and 2250 π
2
125 π and 2250 π
3
250 π and 1125 π
4
125 π and 1125 π