Can you answer me this question please

QUESTION NO 3 A Ramasamy's seven (7) year old Proton Saga needed repairs estimated at $15,000 to make it roadworthy again. His friend, Ah Kau suggested that he buys a four (4) year old Proton Inspira for $15,000 instead of repairing his Proton Saga. Ah Kau estimated the following costs for the two cars: $40,000 $15,000 $15,000 Annual operating costs: Petrol, maintenance, insurance $5,000 $3,000 REQUIRED: (a) Define relevant cost, sunk cost and opportunity cost. (b) Identify the relevant and irrelevant costs for this decision. Unit cost is a critical piece of information for a manufacturer. Identify THREE (3) importance of unit cost. The overall income statement is useful for looking at overall company performance. However, this income statement is of little use for determining the viability of individual business units or segments. Instead, it is important to develop a segmented income statement for each profit center. There are two methods of computing income that are recognized; one based on variable costing and the other based on full or absorption costing. These are costing methods because they refer to the way in which product costs are determined. REQUIRED: (a) State THREE (3) differences in computing income under variable costing and absorption costing. (b) Identify the changes relationship between variable and absorption costing income and the effect on inventory if: I Production > (more than) Sales il. Production