Which of the Following Is a Basic Code Writing Requirement

Multiple Choice

Which of the following is a basic Code writing requirement?

A) That the entire contract be in writing,always in the form of a letter.
B) That the written evidence indicates the quantity of goods sold.
C) That the written evidence be compulsorily signed by both the parties.
D) That the essential terms of the contract and the parties' signatures were contained in more than one document.