An example of the "equity vs. simplicity" tradeoff is the tax treatment of

In what way does long-run equilibrium under monopolistic competition differ from long-run equilibrium under perfect competition?

A) Firms in perfect competition achieve allocative efficiency while firms in monopolistic competition achieve brand efficiency. B) Firms in perfect competition achieve productive and allocative efficiency while firms in monopolistic competition achieve neither allocative nor productive efficiency. C) The only difference is that in a monopolistically competitive market there are many brands to choose from while in a perfectly competitive market there is one standard product. D) Firms in perfect competition achieve productive efficiency while firms in monopolistic competition achieve allocative efficiency.

A price support may be pictured by

A) shifting the demand curve to the right by the amount of the government purchase. B) shifting the demand curve to the left by the amount of the government purchase. C) shifting the supply curve to the right by the amount of the government purchase. D) shifting the supply curve to the left by the amount of the government purchase. E) drawing a horizontal line below equilibrium price at the supported price.