The Table Given Below Shows the Price, Marginal Revenue and Marginal

The table given below shows the price, marginal revenue and marginal cost of a monopolist at different levels of the output. The firm does not incur a fixed cost of production.Table 11.4

-Which of the following is not a necessary condition for price discrimination?

A) ​The firm must be a price maker.
B) ​The firm must be able to distinguish between customers.
C) ​The firm must be able to prevent resale of a product between customers.
D) ​The firm must be able to produce homogeneous products.
E) ​The firm must have a downward-sloping demand curve.