When LED Television Sets Were First Introduced Prices Were High

When LED television sets were first introduced prices were high and few firms were in the market. Later, economic profits attracted new firms and the price of LED televisions fell. This example illustrates

A) a decreasing-cost industry.
B) that consumers receive this new technology "free of charge" in the sense that they only have to pay a price for LED televisions equal to the lowest production cost.
C) an industry with a low minimum efficient scale.
D) how fickle consumer demands are.