Tell which binary data format(s) shown in Figure 5.2 satisfy the following properties, assuming random (fair coin toss) data:

Figure 5.2

(a)?Zero DC level;(b)?A zero crossing for each data bit;(c) Binary 0 data bits represented by 0 voltage level for transmission and the waveform has nonzero DC level;(d) Binary 0 data bits represented by 0 voltage level for transmission and the waveform has zero DC level;

(e) The spectrum is zero at frequency zero (f = 0 Hz);

(f) The spectrum has a discrete spectral line at frequency zero (f = 0 Hz).

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