Mary and Debra Stand on a Snow-Covered Roof

Multiple Choice

Mary and Debra stand on a snow-covered roof. They both throw snowballs with the same initial speed, but in different directions. Mary throws her snowball downward, at 30° below the horizontal; Debra throws her snowball upward, at 30°. When the snowballs reach the ground below,

A) Debra's snowball will have a higher speed than Mary's.
B) Mary's snowball will have a higher speed than Debra's.
C) Both snowballs will hit the ground with the same speed.
D) Debra's snowball never hits the ground since it is thrown upwards.
E) Mary's snowball never hits the ground since it is thrown downwards.