Which of the following statements is not correct?

a. The sales budget is the starting point in preparing the master budget.
b. The sales budget is constructed by multiplying the expected sales in units by the sales price
c. Using methods such as trend analysis and the Delphi technique can help reduce subjectivity in forecasting sales.
d. The cash budget must be prepared prior to the sales budget because managers want to know the expected cash collections on sales made to customers in prior periods before projecting sales for the current period.