The table below shows the phone call durations (in minutes) of four students over five days last week: Ayşe: 15, 20, 10, 25, 30; Mehmet: 10, 15, 20, 15, 10; Selin: 20, 25, 30, 20, 15; Emre: 5, 10, 15, 10, 5. According to the table, which student spent the most time on the phone last week?
A)Ayşe
B)Mehmet
C)Selin
D)Emre