A company makes a very durable product. The company sells 20,000 products in the first year but will be diminishing sales due to the product's durability, so each year it can expect to sell only 75% of the quantity it will have sold the year before. How many products can the company expect to eventually sell?

a. 26,667 products
b. 40,000 products
c. 80,000 products
d. 35,000 products