Technician a Says an Out-Of-Balance Crankshaft Must Be Replaced

Technician A says an out-of-balance crankshaft must be replaced. Technician B says weight can be added or removed from a crankshaft journal to correct an out-of-balance condition. Who is correct?

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