If f(x)=x+5f(x) = \sqrt{x + 5}f(x)=x+5, what is the range of f(x)f(x)f(x)?
[5,∞)[5, \infty)[5,∞)
[−5,∞)[-5, \infty)[−5,∞)
All real numbers
[0,∞)[0, \infty)[0,∞)