An Incumbent Monopolist Producing More Output Than Necessary Might Be

Multiple Choice

An incumbent monopolist producing more output than necessary might be able to keep potential rivals from entering

A) by flooding the market with products below its marginal cost in the short run.
B) if learning by doing reduces marginal cost.
C) if the long-run marginal cost can be lowered below the potential entrant's short-run marginal cost.
D) All of the above.