#7 I need help solving this problem.

A manager must make a decision on shipping. There are two shippers: A and B. Both offer a two-day rate: A for $540, and B for $523. In addition, A offers a three-day rate of $474 and a nine-day rate of $403, and B offers a four-day rate of $451 and a seven-day rate of $422. Annual holding costs are 36 percent of unit price. Four hundred and twenty boxes are to be shipped, and each box has a price of $150. Which shipping alternative would you recommend? (Round your intermediate calculations to 3 decimal places and final answers to 2 decimal places.) ship two-day using A ship four-day using B ship three-day using A ship two-day using B ship seven-day using B