Which of the following combinations is not required in a contract of sale?

• A. I and II
• B. III and IV
• C. II and III
• D. I and IV

Answer: (B)

The key idea is that a sale contract is formed with only the essential elements: mutual consent, the thing being sold (the object), and the price. Once those are in place, the contract exists even if other details aren’t yet fixed. Terms about delivery and payment are performance details, not requirements for the contract’s existence. They can be added, specified later, or be settled by usage or agreement between the parties. So the combination that groups delivery terms and payment terms is the one not required to form the contract. The other pairings involve elements that typically must be present to create a binding sale (like the agreement and the object or the price), so they’re not the non-required combination.