Tell Whether a Linear Model or a Quadratic Model Is

Tell whether a linear model or a quadratic model is appropriate for the data. If linear, tell whether the slope
positive or negative. If quadratic, decide whether the leading coefficient a of x² should be positive or negative.
-The height of a bouncing ball during one bounce, as a function of time.

A) linear; negative
B) quadratic; positive
C) linear; positive
D) quadratic; negative