solve

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 A. The number quadrupled each week. O B. The number increased by a factor of 3 each week. O C. The number increased by 4 each week. O D. The number increased by 3 each week