Alphymus

Jordi stands 20 m from a wall and Diego stands 10 m from the same wall. Jordi throws a ball at an angle of 30° above the horizontal, and it collides elastically with the wall. How fast does Jordi need to throw the ball so that Diego will catch it? Consider Jordi and Diego to be the same height, and both are on the same perpendicular line from the wall.

(A) 11 m/s
(B) 15 m/s
(C) 19 m/s
(D) 30 m/s
(E) 35 m/s