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What is the correct answer?


The traffic lights at three different road crossings change after every 48 sec., 72 sec and 108 sec. respectively .If they all change simultaneously at 8:20:00 hours, then at what time they again change simultaneously .

A. 8:26:12 hrs

B. 8:27:12 hrs

C. 7:12:34 hrs

D. 9:12:30 hrs