For (x) = 4x+1 and g(x) = x^2 -5, find (f•g)(x).
O A. 4x^3 + x^2 - 5x-5
O B. 4x² + x^2 - 4x - 6
O C. 4x^3 + x^2 - 20x-5
O D. 4x^2 -19