You can only use Microsoft Excel 2016 to complete Part 1.Background to the problemsHK Ocean Park sells its products through the gift shops at Ocean Park Hotel, Ocean Park and the online shop on web. Currently, there are three categories (accessory, bag and toy) of products for sale, and a customer can pay the products by cash, cash vouchers (現金券) or both. Each voucher has a fixed value of HK$50, and one or more cash vouchers can be used in each purchase. However, if the purchase is made on the web, the cash will be paid by credit card because no cash voucher will be accepted.Assume you are the IT specialist of this company, the sales manager of HK Ocean Park has asked you to use Excel to record the sales occurred at different locations and analyze the sales data to improve the business. You are given an Excel file OceanParkSales.xlsx which contains two worksheets (Sales and Catalogue) with some data and you are required to modify and format the worksheet Sales to improve the design.In the worksheet Sales, the user will only input data in the cells highlighted in yellow colour in order to save the time in data entry. To reduce input errors, you are required to design formulae for all cells in the four columns (Category, Price, Total and Cash), so that the correct data (e.g. Price, Total etc.) will be displayed automatically when the necessary input data is entered. Also, in this worksheet, apply the skills you have learned in Excel to check if the input data is valid.You also need to analyze the data in worksheet Sales, and show the analyzed data and chart(s) in a new worksheet named "Analysis". Describe your findings in this new worksheet.The completed workbook must contain at least the following three worksheets (and you can add more worksheets if necessary) : The first worksheet (named "Sales") records the sales detail The second worksheet (named "Catalogue") shows the detail of each product The third worksheet (named "Analysis" ) shows the analyzed results and your findingsMarks Allocation 1. The first worksheet (named "Sales") 10%2. The third worksheet (named "Analysis") 10%Marking Criteria 1. Design of formula (correct and easy to understand), worksheet formatting (e.g. conditional formatting), and method(s) (e.g. data validation) used to reduce the chance of getting incorrect data.2. Presentation format of analyzed data is clear, and findings are clearly described.