Which of the following statements are true of the graph of the function f(x)=(x+5)(x-3)?

a.The graph has a relative maximum.

b.The graph has a relative minimum.

c.The graph has an x-int at (5,0).

d.The graph has an x-int at (3,0).

e.The graph has a y-int at (0,-15)

f.The axis of symmetry is x=-2.