Both technicians A and B are correct. On most front wheels the replaceable sealed bearing is pressed between the hub and the wheel flange and is the more difficult to replace. Hence it is usually replaced as a unit.
The unitized wheel hub includes a sealed wheel bearing, a removable wheel hub, and possibly the wheel flange that can be unbolted.
Hence both technicians are correct.
Learn more about wheels and hubs at
https://brainly.com/question/15285468
#SPJ4