Dell Computers entered into an exclusive dealing agreement with Best Buy whereby Best Buy was granted the exclusive right to sell its computers nationwide in return for 60% of the sales price of any Dell computers sold, if any. The parties agreed to an initial shipment of 10,000 computers, with more computers to be shipped later, upon mutual agreement, once the initial shipment was sold. Which of the following best describes Best Buy's obligations to Dell Computers under the agreement?
(A) Best Buy is not obligated to do anything to try to sell any Dell computers because Best Buy's obligation was illusory and not supported by consideration.
(B) Best Buy is required to use "best efforts" in trying to sell Dell computers, but is not obligated to sell any computers.
(C) Best Buy is required to sell 10,000 Dell computers, but is not obligated to order any additional computers.
(D) Best Buy is required to sell all of the Dell computers delivered in the initial shipment, and is obligated to continue to receive shipments to sell in the future once those are sold.