Explanation: A Search And Rescue Transponder (SART) is designed to assist in locating survival craft by responding to radar signals. When an X-band radar (3 cm wavelength) signal from a searching vessel or aircraft hits the SART, the SART immediately transmits a series of 12 swept-frequency pulses. These pulses appear on the radar display as a line of 12 equally spaced dots, extending outwards in range from the SART's actual position along its bearing line. This distinctive pattern is unique to SARTs, making them easily identifiable to rescuers. The "dots" are generated by the individual swept-frequency pulses from the SART, each appearing at a slightly different range due to the SART's internal processing and sweep characteristics. Options A, B, and C do not accurately describe this specific radar signature.