Answer :

Final answer:

In the General Class portion of the 20 meter phone band, the frequencies 14105 kHz and 14305 kHz fall within the band's range of 14000 kHz to 14350 kHz.

Explanation:

The frequencies of the General Class portion of the 20 meter phone band range between 14000 kHz and 14350 kHz. In this case, the frequencies 14105 kHz (B) and 14305 kHz (C) fall within this spectrum. However, 14005 kHz (A) and 14405 kHz (D) fall outside of this range. For example, 4G cellular telephone signals, which are radio waves, operate at approximately 880 MHz, while Wi-Fi networks operate between 2.4 to 5 GHz, showing that radio waves can have a variety of frequencies apart from the one asked in the General Class portion of the 20 meter phone band.

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