Technician A says that after tire service work, tires and wheels must be in a state of static and dynamic balance in order to avoid vibration in service. Technician B says tires and wheels are balanced at the factory and do not need further balancing. Who is correct? a. Technician A b. Technician B c. Both Technician A and Technician B d. Neither Technician A nor Technician B

The correct answer is:<br /><br />a. Technician A<br /><br />Explanation:<br /><br />Technician A is correct. After tire service work, it is important that the tires and wheels are in a state of both static and dynamic balance to avoid vibrations during service.<br /><br />Technician B is incorrect. While tires and wheels may be balanced at the factory, they may still require further balancing after tire service work to ensure they are properly aligned and balanced.<br /><br />Therefore, the correct answer is a. Technician A.