40 .which frequency in the medium frequency band is used for distress and safety traffic by radiotelephony? A: . 2182kHz B: .518kHz C: 6090kHz D: 2614kHz

Which are the preferred frequencies in radiotelephony for on scene cornrnunications? A: 121.5MHz and 2045kHz B: Ch 70 (156.525MHz) and 21 74.5kHz C: Ch 11 (156.650MHz) and 202lkHz D: Ch 16 (156.800MHz) and 2182kHz