moving average method to forecast pancake sales. It assigns a weight of $5$ to the previous month's demand, $3$ to demand two months ago, and $1$ to demand three months ago. If sales amounted to $3000$ pancakes in May, $2200$ pancakes in June, and $1000$ pancakes in July, what should be the forecast for August?

$2400$

$2067$

$1622$

$3767$

$2511$