A ball fell for 20 seconds at a rate of 10 feet per second. A second ball fell for 2x less seconds at a rate of speed that is x feet per second slower than the first ball.

Which of the following equations could be used to determine how far the second ball fell?

A. y = (2x^2 - 40x + 200) ft

B. y = (2x^2 - 12x + 30) ft

C. y = (-2x^2 + 200) ft

D. y = (-2x^2 + 30) ft