3. a) Distinguish between the required conditions for hot working and cold working in terms of: i. Recrystallization temperature ii. Degree of deformation [4 marks] [4 marks] [4 marks] iii. Final surface finish b) Briefly describe the characteristics of the following carbon steels in terms of hardness and ductility: i. Low carbon steel ii. Medium carbon steel iii. High carbon steel c) Classify TWO (2) types of joining metal fabrication method. [2 marks] [2 marks] [2 marks] [2 marks]