The amount of money collected after washing x cars at a car wash and asking for donations is represented by the function f(x) = 9x + 20. If the car wash collected a total of $200, which of the following sets is the domain of the function in the context of the scenario? 1 А x 20 B OSX S20 C {0,1,2,3,...) D {0,1,2,3,..., 20}