A closed system is in continual interaction with its environment

All but one of the following are important factors to consider when selecting an appropriate type of carbon for use in making carbon copies. Which is not an important consideration?

A. The frequency of use of the form B. The number of copies that must be made C. The confidentiality of the form D. The size of the form

With regard to the form requirements for bills of exchange, the ULB is similar to the common law in that both require the instrument to ________

A. state the place where the instrument was drawn B. state the place where payable C. contain the term "Bill of Exchange" D. be in writing