The practice of charging customers different prices for the same good is called:

If we produce one more bottle of water:

a) we incur a marginal cost. b) the marginal social benefit from bottled water increases. c) the price must rise. d) we must move away from equilibrium e) we act efficiently.

The introduction of a tax in a perfectly competitive marketplace that is originally in equilibrium will lower total surplus

a. True b. False Indicate whether the statement is true or false