Final answer:
Technician A is correct about the cold knife being pneumatic, and Technician B is also right regarding wire tools for removing trim.
Explanation:
Technician A is right when he says a cold knife is pneumatic because the cold pack in the picture (b) contains ammonium nitrate which is used in cold packs. Technician B is also correct as a wire tool can be used for removing some trim, which is a practical application of wire tools in various contexts.
Learn more about Mechanical Tools here:
https://brainly.com/question/42878550
