Use ACL and open Rockwood file, and answer the following questions: Using the Inventory file 1- What is the total standard costs? 2- What is the highest amount of standard cost and what is the lowest amount? 3- Is there any inventory item that is duplicated? YES or NO Then go to the Payroll file 1- How many employees? 2- How much is the total salaries? 3- What is the minimum and the maximum salary? 4- Is there two (or more) employees with the same SSN? 5- How many people get paid more than $300,000? 6- How many people get paid less than 40,000?