The strategy underlying price discrimination is
a. to charge higher prices to customers who have good substitutes available to them.
b. to charge everyone the same price, but limit the quantity they are allowed to buy.
c. to increase total revenue by charging higher prices to those with the most inelastic demand for the product and lower prices to those with the most elastic demand.
d. to reduce per-unit cost by charging higher prices to those with the most inelastic demand and lower prices to those with the most elastic demand.