Technician a Says That It Is Necessary to Keep Flat

Multiple Choice

Technician A says that it is necessary to keep flat tappets in order if the old cam and lifters are to be used again. Technician B says that used roller tappets should not be installed on a new camshaft. Who is right?

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