Which of the following statements is/are true based on the graph of the function f (x) = –2(–x – 3) + 4?
As x → ∞, f (x) → 4.
The x-intercept is (–5, 0).
The function is an example of exponential decay.
 I only
 I and II only
 I and III only
 I, II, and III