A detective determines that the number of robberies on a given day and the number of days since the start of the month can be modeled by a square root function. On the fourth day of the month, there were 4 robberies. On the ninth day of the month, there were 6 robberies. On the sixteenth day of the month, there were 8 robberies. Which points should be plotted to graph this function?

A. (2, 2) , (3, 3) , (4, 4)

B. (4, 4) , (9, 6) , (16, 8)

C. (4, 2) , (9, 3) , (16, 4)

D. (2, 4) , (3, 6) , (4, 8)