An employer suggested to provide the following vesting schedules. Determine if these schedules comply with the laws governing qualified retirement plans [explain]:
- In a defined benefit plan a full vesting after 5 years
- In a defined benefit plan a 50% vesting after 6 years and 100% vesting after 7 years
- In a defined contribution plan a 50% vesting after 3 years and 100% vesting at 6 years
- In a defined contribution plan a full vesting after 2 years