Which of the following is an accurate description of equity of redemption?

a. A buyer in default purchases their property after a foreclosure sale for the full amount of the original purchase price.

b. A seller demands that a buyer in default pay the full amount of outstanding debt on a mortgaged property.

c. A buyer in default pays the full amount of outstanding debt on a mortgaged property, plus interest and other associated costs, after the foreclosure sale.

d. A buyer in default pays the full amount of outstanding debt on a mortgaged property, plus interest and other associated costs, before the property is sold by the lender.