When Using the Marginal Analysis Method for Setting a Communication

When using the marginal analysis method for setting a communication budget,retailers must understand ___________.

A) what the initial tasks of the communication budget is and determine a cost
B) that each additional dollar spent must generate more than a dollar of additional contribution
C) the past sales and communication activities to determine the present communication budget
D) the forecasted sales in order to forecast a communication budget
E) the forecasted percentage of sales in order to forecast a percentage of a communication budget