Tara and Mallory are practicing their passing at volleyball practice. Tara bumps the ball from a height of 3 feet above the ground with an initial upward velocity of 12 feet/second. At the same time, Mallory serves the ball from a height of 3.25 feet above the ground with an initial upward velocity of 9 feet/second.

If x represents the number of seconds since each ball is passed and yrepresents the height of the ball, which system of equations models the projectile motion of the two balls? Recall that the acceleration due to gravity is −32 feet/second.
A. y=-16x²+12x-3
y=-16x²+9x-3.25
B. y=-16x²+9x-3
y=-16x²+12x-3.25
C. y=-16x²+9x+3
y=-16x²+12x+3.25
D. y=-16x²+12x+3
y=-16x²+9x+3.25