When can additional terms in an acceptance be considered valid?

The correct answer is valid because the general rule in contract law, particularly under the Uniform Commercial Code (UCC), is that an acceptance that includes additional terms can be valid unless the offeror expressly limits acceptance to the terms of the offer, the additional terms materially alter the contract, or the offeror objects to the additional terms within a reasonable time.

In this context, if the offeree states otherwise during acceptance, they are indicating that they reject the additional terms, thereby adhering strictly to the original offer. This aligns with the principle that any additional terms that the offeree wishes to include need to be clearly communicated and accepted by both parties for them to take effect. Thus, the acceptance remains valid if the offeree does not impose any conditions on their acceptance.

This understanding is essential for recognizing when an acceptance creates a binding agreement. The other options do not sufficiently capture this principle, as they either impose limitations or offer conditions that incorrectly suggest more rigidity in the acceptance process than the law allows.