Find the Smallest Positive Integer and the Largest Negative Integer

Multiple Choice

Find the smallest positive integer and the largest negative integer that, by the Upper- and Lower-Bound Theorem, are upper and lower bounds, respectively, for the real zeros of the polynomial function .

A) upper bound 3, lower bound -4
B) upper bound 20, lower bound -28
C) upper bound 28, lower bound -28
D) upper bound 4, lower bound -1
E) upper bound 20, lower bound -20