For a resource constraint, either its slack value must be or its shadow price must be .

Which of the following is/are required to be in writing under the ucc's statute of frauds? a. a $10,000 oral contract dealing with specially manufactured goods. b. a $550 oral contract dealing with unique goods. c. a $100,000 oral contract involving the lease of goods where the defendant admits the existence of the contract in court. d. a $12,000 oral contract where the seller ships the goods and the buyer takes possession of half of the goods. e. all of the above.