Marie Boyd has been hired by Barnum Hotels to manage staffing for the regional hotel chain. Barnum intends to open two new hotels within the next three years and will have many job positions to fill. Historically, employee turnover is high at Barnum as employees remain with the company for one or two years before quitting. Marie realizes that Barnum needs to make significant changes in its personnel strategy in order to meet the company's goals for the future and improve employee retention rates.Which of the following, if true, best supports the argument that a scatter plot is the most appropriate tool for Marie to use in estimating future personnel needs?()

A. Productivity levels for Barnum employees typically vary from month to month.
B. The size of the two new Barnum hotels will be similar to the chain's other hotels.
C. Barnum requires HR to maintain qualifications inventories for all current employees.
D. Personnel replacement charts serve as useful tools when filling Barnum's managerial positions.