People who have doctorates in the liberal arts are interested in improving their intellects. Companies, however, rarely hire people who are not concerned with the financial gain that can be obtained by hard work in the business world. As a result, companies rarely hire people who have doctorates in the liberal arts. The conclusion of the argument follows logically if which one of the following is assumed? ['Some people who are interested in the liberal arts do not care about money.', 'Only people not concerned with making money in the business world are interested in improving their intellects.', 'The only people not interested in making money in the business world are people who are interested in improving their intellects.', 'People with doctorates in the liberal arts are interested in employment in the business world.']