PLEASEEE HELPPP im gonna cry What’s the name for the array of buttons that provides quick access to commonly used commands?

A.
menu bar
B.
toolbar
C.
ruler
D.
scroll bar

Technician a says that with self-adjusting clutch systems, the release bearing constantly rotates. technician b says that the ball bearing portion of the release bearing should be lubricated with high-temperature grease during routine maintenance. which technician is correct?