*Brainliest* Consider the function f(x) = 2^x and the function g(x).
g(x) = f(x) + 4 = 2^x + 4
How will the graph of g(x) differ from the graph of f(x)?

A. The graph of g(x) is the graph of f(x) shifted 4 units upward.
B. The graph of g(x) is the graph of f(x) shifted 4 units downward.
C. The graph of g(x) is the graph of f(x) vertically compressed 4 units.
D. The graph of g(x) is the graph of f(x) vertically stretched 4 units.