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To reset a retentive timer, the: Select one: a. ET time must be greater than the PT time. b. PT time must be greater than the ET time. c. ET time must equal the PT time. d. none of these. Unlike the TON timer, the TONR timer requires a(n): Select one: a. timer reset input. b. input condition instruction. c. internal relay instruction. d. instantaneous contact instruction. The interconnecting of timers is commonly called: Select one: a. grouping. b. programming. c. sequencing. d. cascading