According to the error on the clock, it's actual time when it was reset was given by:
C. 08:43am
When the actual time was of 8 am, the watch showed 16:43, hence the difference was of:
16 hours 43 minutes - 8 hours = 8 hours 43 minutes.
Midnight is 0 hours 0 minutes.
0 + 8 hours 43 minutes = 8 hours 43 minutes = 4:43 am.
Hence option C is correct.
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