There is an elevator in a 9 story building. In this building, 12 people live on the 1st floor, 15 people live on the 2nd floor, 16 people live on the 3rd floor, 14 people live on the 4th floor, 11 people live on the 5th floor, 13 people live on the 6th floor, 9 people live on the 7th floor, 15 people live on the 8th floor, and 10 people live on the 9th floor. If it is assumed that all members travel by lift, which of the following lift buttons is pressed the most in the building?
There is an elevator in a 9 story building. In this building, 12 people live on the 1st floor, 15 people live on the 2nd floor, 16 people live on the 3rd floor, 14 people live on the 4th floor, 11 people live on the 5th floor, 13 people live on the 6th floor, 9 people live on the 7th floor, 15 people live on the 8th floor, and 10 people live on the 9th floor. If it is assumed that all members travel by lift, which of the following lift buttons is pressed the most in the building?