Jenny sells her Value Auto Parts store to Burt and makes a valid contract not to compete. Burt wants to sell the store to Discount Auto Centers and assign to Discount the right to Jenny’s promise not to compete. Burt can

a. sell the business and assign the right.

b. sell the business but not assign the right.

c. assign the right but not sell the business.

d. neither assign the right nor sell the business.