Tri-Valley Growers plants 1,000 acres of organic lettuce and enters into a contract with Safeway Stores in which Safeway agrees to buy from Tri-Valley, and Tri-Valley agrees to sell to Safeway, all of Tri-Valley's lettuce production for that season at a specified price. Which of the following circumstances would constitute a breach of contract?

A)if Safeway buys lettuce from another producer

B)if Tri-Valley delivers less than expected because of an insect infestation

C)if Tri-Valley sells 15% of its production to Whole Foods at a higher price

D)if Tri-Valley produces more than expected because of perfect weather conditions