A firm's fixed but avoidable costs are $100,000 and its variable costs are $250 per unit.It produces 50,000 units and prices it at $400 per unit.In the long-run,how low can price go before the firm decides to shut down?

A) ​$150
B) $252
C) $250.20
D) ​$400

The backward-bending labor supply curve includes each of these variables except

A) the income effect.
B) the substitution effect.
C) the savings effect.