Technician ​A Says That Camshaft End Thrust on a Pushrod

Multiple Choice

Technician ​A says that camshaft end thrust on a pushrod engine with a camshaft-driven oil pump results from resistance of oil being pumped by the oil pump. Technician B says that flat tappet camshafts are usually inspected by visually checking the wear pattern on the lobes for edge loading. Who is right?

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