Which tool does Technician A say can cut hardened rods?

The mention of bolt cutters in the context of cutting hardened rods is appropriate because bolt cutters are specifically designed for cutting through tough materials, including hardened steel. Their long handles provide significant leverage, allowing the technician to exert considerable force on the cutting blades, which are made from strong materials capable of handling the stress involved in cutting through hardened substances.

The other tools listed are not suitable for cutting hardened rods. A pipe wrench is designed mainly for gripping and turning pipes rather than cutting, while wire cutters are intended for cutting less rigid materials like electrical wire. Tin snips, which are used for cutting sheet metal, lack the strength and design necessary to effectively cut through hardened rods. This makes bolt cutters the correct choice for this task, illustrating the importance of using the right tool for specific jobs in diesel technician work.