For option (1), the producer surplus and consumer surplus need not to be equal in order to have market to be efficient. So this option is false.
For option (3), when the Market is at Equilibrium, it's not necessary to have consumer surplus and producer surplus to be equal.
For option (4), Even if producer surplus and producers surplus aren't equal the market will ne at Equilibrium.
For option (2), The Market is efficient, Cause a Equilibrium is achieved and net surplus is maximum at this place.
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