Which of the following is true in long-run equilibrium for a firm in monopolistic competition?

If orange juice prices fall by 25 percent next year, there will be a

A. rightward shift in the demand for pineapple juice. B. rightward shift in the supply of pineapple juice. C. leftward shift in the supply of pineapple juice. D. leftward shift in the demand for pineapple juice.

In economics, the planning horizon is defined as

A. the long run, during which all inputs are variable. B. the period of time for which technology is fixed. C. the shortest time period over which the firm can make decisions. D. the immediate future, such as the next day that any action can be taken.