It is week $1$ and there are currently $20$ As in stock. We need $300$ As at the start of week $5.$ If there are scheduled receipts planned for week $3$ and week $4$ of $120$ As each and A has a lead time of $2$ weeks, when and how large of an order should be placed to meet the requirement of $300$ As$?$A firm uses graphical techniques in its aggregate planning efforts. Over the next twelve months $($its intermediate period$),$ it estimates the sum of demands to be $105,000$ units. The firm has $250$ production days per year. In January, which has $22$ production days, demand is estimated to be $11,000$ units. A graph of demand versus level production will show that: