21. With respect to the pure monopolist’s demand curve, it can be said that: a. the stronger the barriers to entry, the more elastic is the monopolist’s demand curve. b. price exceeds marginal revenue at all outputs greater than 1. c. demand is perfectly inelastic. d. marginal revenue equals price at all outputs.

21. With respect to the pure monopolist’s demand curve, it can be said that:
a. the stronger the barriers to entry, the more elastic is the monopolist’s demand curve.
b. price exceeds marginal revenue at all outputs greater than 1.
c. demand is perfectly inelastic.
d. marginal revenue equals price at all outputs.

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