Use the following graph of the functions f(x) and g(x) to answer questions 28, 29, and 30. 4 f(x) 3 g (x) 2 2 3 4 5 28. Let h(x) = f(x) + g(x). What is h'(1)? A) -2 B) O C) 1 D) 2 E) None of the above. 29. Let h(x) = f(x) + g(x). What is h'(3)? A ) - 2 B) 0 C) 1