What elements are included in the frequency spectrum of an AM signal produced by a sinusoidal modulating signal?

Correct option is B

For Amplitude Modulation (AM) with a sinusoidal modulating signal, the transmitted spectrum contains:

$$\\[6pt]\bullet \ \textbf{Carrier frequency } f_c \\[2pt]\bullet \ \textbf{Upper sideband (USB)} \text{ at } f_c + f_m \\[2pt]\bullet \ \textbf{Lower sideband (LSB)} \text{ at } f_c - f_m$$

Noise is not part of the generated AM signal; it may appear during transmission but is not an inherent component.

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