Five clocks are being tested in a laboratory. Exactly at noon, as determined by the WWV time signal, on successive days of a week the clocks read as in the following table. Rank the five clocks according to their relative value as good timekeepers, best to worst. Justify yourchoice.

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Clock Sun. Mon. Tues. Wed. Thurs. Fri. Sat. A 12:36:40 12:36:56 12:37:12 12:37:27 12:37:44 12:37:59 12:38:14 B 11:59:59 12:00:02 11:59:57 12:00:07 12:00:02 11:59:56 12:00:03 с 15:50:45 15:51:43 15:52:41 15:53:39 15:54:37 15:55:35 15:56:33 D 12:03:59 12:02:52 12:01:45 12:00:38 11:59:31 11:58:24 11:57:17 E 12:03:59 12:02:49 12:01:54 12:01:52 12:01:32 12:01:22 12:01:12