Dawson Razors agrees to ship 100 Basic Brand razors to Shavers-R-Us by June 1. Instead, Dawson ships 100 Advance Brand razors (that were more expensive) on June 1 and gives Shavers-R-Us notice of the substitution. Shavers rejects the shipment as nonconforming. Which of the following is true?

a. Dawson’s right to cure has expired.

b. Dawson will still have a right to cure even after June 1.

c. Shavers must accept the Advance Brand razors.

d. Shavers may assert commercial impracticability as a defense.

e. B and C