The correct answer is: Both A and B.
- Statement A is correct because diesel electricians focus on diagnosing electrical issues in diesel engines, while diesel mechanics are more concerned with the mechanical aspects, including inspecting, repairing, and maintaining the engine itself.
- Statement B is correct as well; diesel electricians and diesel mechanics often collaborate in the maintenance and repair of diesel-powered equipment, including locomotives.
Therefore, both statements highlight the differences between the two roles accurately.