Technician A says that the labyrinth seal (drum groove) helps to keep water from getting into a drum brake. Technician B says that only synthetic brake grease, lithium brake grease or anti-seize compound should be used as a brake lubricant. Which technician is correct?
◦ Technician A only
◦ Technician B only
◦ Both Technicians A and B
◦ Neither technician A nor B