A local business uses a weighted moving average method to forecast the Bannock sales. Consider the weight of 6 to the previous month's demand, 4 to demand two months ago, and 3 to demand three months ago. If sales amounted to 1100 bannocks in May, 2000 Bannocks in June, and 2500 Bannocks in July, what should be the forecast for August?

a. 3767 Bannocks in August;

b. 2167 Bannocks in August;

c. 2400 Bannocks in August;

d. 2023 Bannocks in August;

e. 1622 Bannocks in August;