For several weeks, the function f(x) = 3(4)¥ represented the number of birds infected with an illness x weeks after the first birds became sick. How did the number of sick birds change each week? O O A. The number increased by 3 each week. B. The number increased by 4 each week. C. The number quadrupled each week. hi O D. The number increased by a factor of 3 each week. SUBMIT