Design an algorithm that will produce an inventory report from an inventory file. Each input inventory record contains the item number, open inventory amount, amount purchased and amount sold. Your program is to read the inventory file and print a detail line for each inventory record showing item number, open inventory amount, amount purchased, amount sold and final inventory amount. The final inventory amount is calculated as opening inventory amount + purchases sales. At the end of the report, print the total open inventory amount, the total amount purchased, the total amount sold and the total final inventory amount.