The U.S. Navy is considering four ports for their submarine squid proofing operations: San Diego, Bremerton, Virginia Beach, and Tulsa. The fixed costs at each location are $500,000, $700,000, $1,000,000, and $250,000 respectively and the variable costs are $300,000, $200,000, $100,000, and $1,000,000. Which location can most economically service the 4 submarines per year that need this valuable service performed?