At a Track Event, Runners, Long Jumpers, and Throwers Are

Multiple Choice

At a track event, runners, long jumpers, and throwers are present. All of the runners are long jumpers, and none of the throwers are runners.
If the statements above are true, then which of the following must also be true?

A) All of the long jumpers are runners.
B) Most of the throwers are not long jumpers.
C) Some of the long jumpers are not throwers.
D) All of the runners are also throwers.
E) None of the throwers are also long jumpers.