The growth of a population of bacteria can be modeled by an exponential function. The graph models the population of the bacteria colony P(t) as a function of the time t, in weeks, that has passed. The initial population of the bacteria colony was 500. What is the domain of the function? What does the domain represent in this context? A. The domain is the real numbers greater than 500. The domain represents the population of the colony after a given number of weeks.

B. The domain is the nonnegative real numbers. The domain represents the time, in weeks, that has passed.

C. The domain is the nonnegative real numbers. The domain represents the population of the colony after a given number of weeks.

D. The domain is the real numbers greater than 500. The domain represents the time, in weeks, that has passed.