Technician A says that the a three-element frame rail can usually achieve a high section modulus (SM) without adding additional weight. Technician B says that one way of meeting a high RBM requirement and keeping the weight of a frame to a minimum is to use hardened steel frame rails. Who is correct?

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


Answer: B

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