Which type of signal does RCA Cable transmit?

RCA cables are designed to transmit both audio and video signals, making them versatile connectors widely used in various audio-video applications. Typically, RCA cables come in pairs or sets of three: one for video (often colored yellow) and two for audio (red and white or red and black). The yellow cable carries the composite video signal, which combines the video information into a single channel, while the red and white (or black) cables carry the stereo audio signals. This capability to transmit both types of signals simultaneously allows for convenient connections between devices like televisions, DVD players, and audio systems, facilitating a complete multimedia experience.

The other options focus on only one type of transmission or data, which does not reflect the full functionality of RCA cables. RCA cables are not limited to just audio or video, nor do they serve solely for data transmission.