Which best describes a root of a polynomial?
A. A point on the graph of the polynomial that has a greater y-value than any nearby points on the graph B. The y-value of a point on the graph of the polynomial that has an x-value of 0.
C. The x-value of a point on the graph of the polynomial that has a y-value of 0.
D. A point on the graph of the polynomial that has a greater x-value than any nearby points on the graph.