Technician a Says That the Differential Assembly Provides a Means

Multiple Choice

Technician A says that the differential assembly provides a means for the inside and outside wheels to turn at different speeds when going around a corner. Technician B says that the differential assembly provides smooth shifts and reduces gear "grinding" by matching gear speeds. Who is correct?

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