Three bells make a beeping sound after every 48 seconds, 72 seconds 108 seconds respectively. They beeped together at 10 AM. The time (hh:mm:ss), when they will next beep together at the earliest is:
1
10 : 07 : 48
2
10 : 07 : 12
3
10 : 07 : 24
4
10 : 07 : 36