Staff, Inc., a flour wholesaler, contracted to deliver to Eclaire, a producer of fine baked goods, her flour requirements for a one-year period. Before delivery of the first scheduled installment, Staff sold its business and "assigned" all of its sale contracts to Miller, Inc., another reputable and long-time flour Miller, Inc., another reputable and long-time flour wholesaler. Staff informed Eclaire of this transaction. For this question only, assume that when Miller tendered the first installment to Eclaire in compliance with the Staff-Eclaire contract, Eclaire refused to accept the goods. Which of the following arguments, if any, legally support(s) Eclaire's rejection of the goods? I. Executory requirements contracts are nonassignable. II. Duties under an executory bilateral contract are assumable only by an express promise to perform on the part of the delegatee. III. Language of "assignment" in the transfer for value of a bilateral sale-of-goods contract affects only a transfer of rights, not a delegation of duties. 
I only. II and III only. I and II and III. Neither I nor II nor III.