Deanna has earned $71,750 annually for the past six years working as an architect for WCC Under WCC's defined benefit plan (which uses a seven-year graded vesting schedule) empl benefit equal to 4.0 percent of the average of their three highest annual salaries for every with WCC. Deanna has worked for six full years for WCC and her vesting percentage is 80 Deanna's vested benefit (or annual retirement benefit she has earned (ar)? $57,400 $13,776 $17,220 $0