As a result of changing sales figures, a company increased the size of its workforce very quickly at first and then more slowly, as shown in the table. Years After Opening1234567
Number of Employees100348405575654704746
Which type of function best models the data?

A.
a linear function with a positive slope
B.
a quadratic function with a positive value of a
C.
a quadratic function with a negative value of a
D.
a square root function