From the given times in Riyadh and Manila, it may be concluded that time is Riyadh is 5 hours earlier than in Manila. When you land on Manila by 2:00 am on Monday, the time in Riyadh was just 9:00 pm on Sunday. Since the total time the travel took is 11 hours and 40 minutes, the time in Riyadh when you left is
9:20 a.m Sunday
Thus, the answer is letter B.