Respuesta :
Answer:
D) revenue-cost method
Explanation:
This method is a type of forecasting method used by accountants to determine the revenue of a project. This method is used by accountants that regularly review the estimated costs and revenue of a project to ensure that it remains valid. This is because the conditions of project can change very quickly. In this case, if Sarah knows that the sale of her umbrellas is seasonal, the best forecasting method for her to use is the revenue-cost method.
Answer: the correct answer is A) moving averages methods
Explanation: for seasonal forecasting the moving averages method is very useful.