Question

The graph shown below expresses a radical function that can be written in the form f(x)=a(x+k)^(1/n)+c.
pic attached
What does the graph tell you about the value of c in this function?
A. It is not possible to tell whether c is greater than or less than zero.
B. c is greater than zero.
C. c is less than zero.
D. c equals zero
(getting graph)