Company A sends the tollowing letter to Company l3: "We have 500 textbooks available tor you to purchase. We propose to sell them to you for $100 each." Com panyA attaches a form letter includes many terms. Two days letter, Company B sends a form letter that includes additional terms and alternative warranty provisions. Have two companies formed a legally binding contract? No, because Company as offer has expired Yes. because definite acceptances may not add terms to the offer No, because of the mirror-image rule Yes. because warranty provisions play no role in contract formation