Which of the following correctly describes how most commercial highway truck wheel bearings are lubricated?

A) factory-lubricated for life,sealed bearings
B) wet (oil bath) hub
C) all purpose axle grease
D) graphite-base multi-purpose grease

Factory-Lubricated

Equipment or components that are lubricated during manufacturing, often ensuring longevity and reliability of operation from first use.

Oil Bath

A lubrication method where components, often gears or bearings, are submerged in oil, ensuring continuous lubrication and cooling.