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Kim's Nail Salon uses a weighted moving average method to forecast demand. She assigns a weight of 5 to the

previous month's demand, 3 to demand two months ago, and 2 to demand three months ago. If demand was 800 customers in April, 900 customers in May, 1,200 customers in June, and 2,000 customers in July, what should her forecast for August be?

A. 1,540

B. 910

C. 1,400

D. 1,210

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