As its retirement plan contribution, Aaron Copeland's employer has been buying shares of the company's stock for Aaron's benefit. What type of retirement plan does Aaron most likely have

When balancing wheels with either dynamic or road force balancers, technician a says it is really important to follow the instructions provided with the particular balancer you're using. technician b says that when rebalancing a wheel, if it is out of balance, it is best to remove the old weights and recheck the balance before adding new weights. who is correct?