Select the correct answer.
The time, t, in seconds, required for an object accelerating at a constant rate of a meters/second to travel a distance of d meters is given by this equation.
t=√2d/a
Which equation expresses d in terms of t and a?

A. d=2at^2
B. d=√2t/a
C. d=at^2/2
D. √a/2t