A girl throws a stone from a bridge. Consider the ways she might throw the stone. The speed of the stone as it leaves her hand is the same in all cases.

Case A: Thrown straight up
Case B: Thrown straight down
Case C: Thrown out at an angle of 45 degrees above horizontal
Case D: Thrown out horizontally

In which case will the speed of the stone (i.e., the magnitude of the velocity) be greatest when it hits the water?
A) Case A
B) Case B
C) Case C
D) Case D
E) all same