19. A polynomial $p ( x )$ has a relative maximum at $( - 2,4 )$, a relative minimum at $( 1,1 )$, a relative maximum at $( 5,7 )$ and no other critical points. How many zeros does $p ( x )$ have?\\
(A) One\\
(B) Two\\
(C) Three\\
(D) Four\\
(E) Five\\