A scientist began a study with a sample of 1,500 bacteriaHe noticed that the number of bacteria in the sample after t days can be modeled by the equation P = 1, 500 * 5 ^ t In this equation, what does 5 ^ t represent? a. The number of bacteria increases by 5 bacteria each day.

B. The number of bacteria increases by a factor of t each day for 5 days.

C. The number of bacteria increases by a factor of 5 each day.

D. The number of bacteria increases by t bacteria after 5 days.