With the introduction of e-books, distributors could still set their own retail prices, but with a restriction. Distributors could set prices below a publisher's retail list price so long as they
a.
matched the commission received from a publisher.
b.
exceeded the commission received from a publisher.
c.
did not exceed the commission received from a publisher.
d.
did not increase prices to the readers.
e.
prevented discounts to competitors.
Answer: did not exceed the commission received from a publisher.