Technician a Says That the Lube Levels in Drive Axles

Multiple Choice

Technician A says that the lube levels in drive axles on most heavy trucks can be checked by viewing through a hub inspection window.Technician B says that following a differential carrier oil change,each side of the axle should be in turn,be jacked up and held for one minute to ensure that lube gets to the wheel ends.Who is correct?

A) Technician A only
B) Technician B only
C) Both A and B
D) Neither A nor B