Verify the formula by differentiation. sec (9x + 5)dx = - tan (9x + 5) + C Which function should be differentiated? A. | - tan (9x + 5) + C O B. sec (9x + 5)Use the Chain Rule (using f(g(x))) to differentiate. Recall that differentiating a constant, such as C, results in 0. Therefore, C will not influence choosing appropriate definitions for f and g. Choose appropriate definitions for f and g below. O A. f(x) = - tan (x + 5); g(x) = 9x O B. f(x) = tan (x); g(x) = 9x + 5 O C. f(x) = 9x; g(x) = - tan (x+5) O D. f(x) =9x + 5; g(x) = - tan (x)