The Excited Company has a qualified retirement plan where each employee contributes 3 percent of his or her pre-tax income into the plan and the company matches the employee's contribution. The amount known at retirement is based on an employee's account balance when he or she retires. This plan is known as a ____ retirement plan Question 17 options: 1) defined benefit, flat dollar amount for all employees 2) defined contribution plan 3) defined benefit flat percentage of annual earnings 4) defined benefit, unit-credit formula