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Which data fidelity risk increases when insufficient guard bands prevent overflow?

A)Adjacent-channel interference impairment
B)Subharmonic resonance amplification.
C)Reflected signal multipath fading
D)Timing jitter induced bit errors

💡 Explanation

Adjacent-channel interference increases because frequency-division multiplexing relies on sufficient frequency separation which spectral leakage compromises, therefore some portions improperly overlay interfering signals, rather than conveying distinct and independent information.

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