With full-line selling, it is beneficial to use demonstration or sales tools to build customer interest in the suggested item

In which of the following can the Statute of Frauds be raised under the common law of contract?

A) when a seller of specially manufactured goods has made commitments for the procurement for an oral agreement B) when the party against whom enforcement of an oral sales or lease contract is sought admits to such a contract in court C) when the writing must be signed by the party against whom enforcement is sought D) when there has been no written confirmation of a contract between two merchants

In the linear programming formulation of a transportation network:

A) there is one variable for each arc. B) there is one constraint for each node. C) the sum of variables corresponding to arcs out of an source node is constrained by the supply at that node. D) all of the above