Select the appropriate sensor(s), measure(s), and frequency range to obtain valid vibration data for a single-reduction gearbox driven by a small turbine with rolling element bearings. The turbine operates at 2846 RPM, the output shaft rotates at 987 RPM, the ball pass frequency of the inner race is 8290 CPM, and the gear mesh frequency is 122,378 CPM. Justify your choices.