Question: An appliance store sells 2 types of refrigerators. Each Cool It refrigerator sells for USD 640 and each Polar sells for USD 740. Up to 330 refrigerators can be stored in the warehouse and new refrigerators are delivered only once a month. It is known that customers will buy at least 80 Cool-Its and at least 100 Polar each month. Find how many of each brand should the store stock and sell each month to maximize revenues?                                              

[A] 310 Cool-Its and 175 Polars

[B] 230 Cool-Its and 100 Polars

[C] 95 Cool-Its and 235 Polars

[D] 80 Cool-Its and 250 Polars