Retailer fills out a purchase order for 100 sweaters, at $2 per sweater, delivery within 30 days. Wholesaler sends an invoice, accepting Retailer's offer that reads, "We accept your offer to purchase 100 sweaters at the stated rate and within the delivery period. Interest will be applied to unpaid balances at normal trade rates." Is there a contract between Retailer and Wholesaler that includes Wholesaler's interest provision?

(a) Yes, because Retailer did not promptly object.

(b) Yes, because the additional term is not a material alteration.

(c) Yes, because Retailer did not insist on its own terms.

(d) Yes, for each of these reasons.