Solve clearly

Please find the below image on Country X. Product category X from developed M from ROW to countries to Row developed countries Food, beverages 140 160 Petroleum 60 452 Chemicals 242 80 Machinery 1002 824 Clothing 90 280 a) Calculate intra-industry trade shares and net trade for each product category. (4 points) b) Which categories have the highest IIT shares? (2 points) c) Why? (2 points) d). What explains the pattern of net trade ? (2 points)