Ear protection is being discussed. Technician A says that ear protection is not needed when briefly using an air hammer that produces more than 85 decibels. Technician B says that ear protection is not needed when using a grinder that produces 60 decibels for 2 hours.
Select one:
A.) Technician A
B.) Technician B
C.) Both technicians A and B
D.) Neither technician A or B​