At a conference, the only events scheduled for the day are s

At a conference, the only events scheduled for the day are seminars and breaks. All seminars are the same length and are 10 times as long as each break. A break must be between two consecutive seminars. If the first seminar begins at 9:00 a.m. and the third one ends at 11:40 a.m., how long will the conference last if there are a total of 6 seminars that day?

A 5 hours and 15 minutes
B 5 hours and 20 minutes
C 5 hours and 25 minutes
D 5 hours and 30 minutes
E 5 hours and 35 minutes