Using the following information, calculate the total sales force size necessary by using each of the following approaches: breakdown, workload, and incremental. Be sure to show your work. Also, explain the advantages and disadvantages of each approach. Which approach would you recommend using to determine salesforce size? Why? - Sales of $80 million are forecast for next year. - Fifteen thousand calls are needed in the market area to be covered. - Salespeople generate an average of $2 million in annual sales. - A salesperson can make an average of 500 annual sales calls. - Marginal salesperson cost is $65,000. With 88 salespeople, the marginal salesperson profit contribution is $75,000. This profit contribution decreases by $5,000 with each additional salesperson added to the base of 88 salespeople. Marginal salesperson cost remains constant. - Turnover is 10 percent annually.