All event planners are outgoing people and all outgoing people are extroverts. At least one shy person is an event planner. If the statements above are true, which of the following doesn't necessarily have to be true (i.e. might not be true)?
(A) At least one shy extrovert is not an event planner.
(B) At least one outgoing person who is an event planner is shy.
(C) All people who are not extroverts are not event planners.
(D) At least one shy person is an extrovert.
(E) At least one extrovert is shy