12.4 Excel Project. REQUIRED a. Create a 12-month cash flow budget in Excel using the following assumptions: Initial sales of $5 million, with forecasted monthly growth of 1% 40% of each month's sales for cash; 30% collected the following month; 20% collected 2 months later; 8% collected 3 months later; and 2% never collected Initial cash balance of $350,000 b. Add a "spinner to your spreadsheet that will enable you to easily change forecasted monthly sales growth to range from 0.5% to 1.5% in increments of 0.1%. c. Add a scroll bar to your spreadsheet that will let you modify the amount of initial sales to vary from $4 million to $6 million in increments of $100,000. d. Design appropriate data entry and processing controls to ensure spreadsheet accuracy. (Hint: For help on steps b and c, see the article Dial a Forecast," by James A. Weisel, in the December 2006 issue of the Journal of Accountancy. The Journal of Accoun- tancy is available in print or online at the AICPA's Web site: www.aicpa.org.)*