Joan, age 40, is dissatisfied with her job. And Martin, age 25, is satisfied with his job but thinks the union could give better benefits beyond the associated costs. Most research studies regarding individual voting decisions would predict that, of the two:

A. Joan is more likely to vote for the union since she is older.

B. Martin is more probable to vote for the union since men do more than women.

C. Joan is more probable to vote for the union because she is frustrated.

D. Martin is more probable to vote for the union because he sees economic opportunity in representation.