Correct Answer - Option 4 : 11 hours 12 minutes
For every water image based on a clock,
If minutes given are less than 30, then subtract given time from 17:30 hrs.
If minutes given are more than 30, then subtract given time from 17:90 hrs.
Here, the minutes are more than 30, thus subtract given time from 17:30 hrs.
Therefore, 17:30 – 06:18 = 11:12.
Hence, the correct answer is
11 hours 12 minutes.