Using the denition of the derivative, nd l'(x). Then nd l'( - 6), t'(0), and f'(5) when the derivative exists. 108 RX): 7 f'(X) = (Type an expression using x as the variable.) Select the correct choice below and, it necessary, ll in the answer box to complete your choice. O A. f'( - 6) = O B. The derivative does not exist. Select the correct choice below and, it necessary, ll in the answer box to complete your choice. O A. f'(0)= O B. The derivative does not exist. Select the correct choice below and, it necessary, ll in the answer box to complete your choice, O A. f'(5) = (Type an integer or a simplied fraction.) O B. The derivative does not exist