A person stands on the roof garden of a tall building with one ball in each hand. If the red ball is thrown horizontally off the roof and the blue ball is simultaneously dropped over the edge, which statement is true?

(a) Both balls hit the ground at the same time, but the red ball has a higher speed just before it strikes the ground.
(b) The blue ball strikes the ground first, but with a lower speed than the red ball.
(c) The red ball strikes the ground first with a higher speed than the blue ball.
(d) Both balls hit the ground at the same time with the same speed.