If $a, b$ and $c$ are positive, consecutive terms of a geometric sequence (that is, $\frac{c}{b}=\frac{b}{a}$ ), then the graph of $y=a x^{2}+b x+c$ is

(A) a curve that intersects the $x$-axis at two distinct points

(B) entirely below the $x$-axis

(C) entirely above the $x$-axis

(D) a straight line

(E) tangent to the $x$-axis

## Part C: Each correct answer is worth 8.