Monopolies are sometimes more technologically efficient than perfectly competitive markets

In the housing market, if a rent ceiling of $600.00 is imposed when the equilibrium rent is $500.00, why will nothing change?

What will be an ideal response?

Which of the following statements is true?

A) Optimization in levels is based on behavioral analysis. B) Optimization in differences is based on marginal analysis. C) Optimization in differences is often faster than optimization in levels, as it considers all aspects of the feasible alternatives. D) Optimization in levels is often slower to implement than optimization in differences, as it considers only the aspects in which alternatives differ.