Becker and Kayla are members of the school chess team. They record the number of games they each play for 10 days. The data are shown below

Becker: 5,2,4,1,1,4,5,3,2,1
Kayla: 2,3,1,1,4,1,5,3,5,5

Based on the data, which estimate represents the mean of number of games chess team members play per day?

A.) 1
B.) 3
C.) 4
D.) 10