Richard kept a log of the number of hours he spent fishing on vacation and the total number of fish he caught. The fishing log data is displayed in the table. Number of hours, x: 1, 3, 5, 8, 10, 15; Number of fish caught, y: 4, 8, 12, 1, 22, 32

Which function best describes the relationship between the number of hours spent fishing and the number of fish caught?

a- f(x)=3+1

b- f(x)=4

c- f(x)=2+2

d- f(x)=+5