Plz any one expert answer this question and one like also plz.....

The graph of the equation h = -at² + bt + c, which describes how the height, h, of a hit baseball changes over time, t, is shown below.



If you alter only this equation's c term, which gives the height at time t = 0, the alteration has an effect on which of the following?
I. The h-intercept
II. The maximum value of h
III. The t-intercept

F. I only
G. II only
H. III only
J. I and III only
K. I, II, and III