Johnson Electronics sells electrical and electronic components through catalogs. Catalogs are updated and printed every year. The variable production cost is $5 per catalog. Data indicate that, on average, each printed catalog generates a profit of $35 from sales (i.e., $40 revenue). What is the optimal service level for the catalogs printing decision? Please identify Cu (under-stocking cost) and Co (overstocking cost) to calculate the critical ratio, i.e., ths optimal service level. Please briefly explain your calculation logic to show the work. The demand for the printed catalog is distributed as follows (a selective part): Please identify the optimal production quantity, i.e., the number of catalogs to be printed, based on the optimal service level identified in the previous question. Please explain your logic to show the work