A single pressure transmitter (1oo1) is being used in a SIF to initiate a trip when the pressure output signal goes below 6 mA. This transmitter is connected to a safety PLC that is programmed to detect under-range (< 3.6 mA) and over-range (> 21 mA) current signals, and send a diagnostic alarm to the repair center. The safety PLC has a trip delay on the analog input to prevent any spurious trip when the current makes its transition from active value to failure condition. The pressure transmitter is programmed to send its output low on detection of a failure to avoid a false trip. In this application, how are the functional failure rates in Table 10-1 classified?