Which of the Following Is a Basic Code Writing Requirement

Multiple Choice

Which of the following is a basic Code writing requirement for contracts?

A) The entire contract must be signed by both parties and a third party who will not gain monetarily from the exchange.
B) The written evidence should indicate the quantity of goods sold.
C) The written evidence should be compulsorily signed by both the parties.
D) The terms of the contract and the parties' signatures should be contained in more than one document.