PLEASE HELP ME
(03.03 MC)
A bacteria is growing by a factor of 2 every hour from 1 p.m. to 11 p.m. The function below shows the number of bacterial cells, f(x), after x hours from 1 p.m.: f(x) = 20(2)* Which of the following is a reasonable domain for the function?

A. All positive integers
B. 1≤x≤ 11
C. 0≤x≤ 20
D. 0≤x≤ 10​