Which statement about unions is correct? Group of answer choices They negotiate to lessen pay disparities among workers, because they care about pay equity. They enforce pay-for-performance bonuses because they are unable to influence pay equity. They cannot do anything to reduce compensation dispersion because senior management has full control over salary and benefits. They can negotiate the design of compensation to reduce pay dispersion. One way to do this is to ensure that the fringe benefits offerings are identical to those offered by non-unionized firms. None of the above