It takes a total of 6 hours to fill up an inground backyard pool using a standard hose. A function can represent this situation to represent the amount of water in the pool until it is full as a function of the time the hose is running. Determine the domain for this function.

 The domain is all integers from 0 to 6 hours. The domain is all even integers from 0 to 6 hours. The domain is all real numbers from 0 to 6 hours. The domain is all positive real numbers.