For which functions would the appropriate domain be all positive integers? select ALL that apply A) The function f(n) models the size of a jar that holds n marbles.

B) The function f(y) models the number of inches a tree grows in n years.

C) The function f(r) models the circumference of a balloon based on radius, r.

D) The function f(s) models the population of mice based on the number of n snakes in an ecosystem.

E) The function f(n) models the amount of labor-hours it takes to construct n televisions that are ready to be sold.