On May 1 (the required delivery date), Seller delivered goods that Seller reasonably believed were acceptable. The next day, Seller was told tat the goods were nonconforming. Seller immediately gave notice that the improper performance would be cured. Under these facts:

a. Seller cannot cure. A seller cannot cure an improper performance.

b. Seller cannot cure. A seller can cure only if a cure is done within the original contract time.

c. Seller can cure if Seller tenders confirming goods to the buyer within a reasonable time.

d. Seller can cure whenever Seller chooses to do so.