Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will fit that ro

Technician A says that fractured rods have a unique mating surface and that only the cap that was fractured is the one that will fit that rod. Technician B says that a powdered metal rod is less expensive, lighter, and as strong as a forged rod. Who is correct?
a) technician A
b) technician B
c) both technicians A and B
d) neither technician A nor B