D. the EN bit is false. Identify the true statement for this timer circuit 25 seconds after the NO selector switch connected to terminal I: 3/6 is turned off. 1746-0e 1e A. EN is true B. I: 3/6 is true C. TT is false. D. O: 2/1 is true. 21. Explain the difference between TON and RTO timers? A TON resets itself once the Accumulated value is equal or greater than the Preset value B. RTO resets itself once the Accumulated value is equal or greater than the Preset value C. RTO resets its count once its input becomes disabled D. All of the answers are correct 22. Which counter bit is only true when the ACC value is equal to or greater than the PRE value? A. UN B. OT. C. DN D. CU 23. Which counter bit is only true when the up counter rung is true? A DN B. CD C. cu D. UP 24. Which one of the following statements describes the condition of the ladder logic after 12 false to true to false transitions of l: 2/14 instruction