If an input necessary for production is in limited supply so that an expansion of the industry raises costs for all existing firms in the market, then the long-run market supply curve for a good could be ?

If an input necessary for production is in limited supply so that an expansion of the industry raises costs for all existing firms in the market, then the long-run market supply curve for a good could be ?

A. perfectly inelastic
B. perfectly elastic
C. upward slog
D. downward slog

A grocery store should close at night if the ?

A grocery store should close at night if the ?

A. variable costs of staying open are less than the total revenue due to staying open.
B. total costs of staying open are less than the total revenue due to staying open
C. variable costs of staying open are greater than the total revenue due to staying open
D. total costs of staying open are greater than the total revenue due to staying open

In the short run, the competitive firm’s supply curve is the portion of the marginal cost curve that lies above the average variable cost curve?

In the short run, the competitive firm’s supply curve is the portion of the marginal cost curve that lies above the average variable cost curve?

A. Upward-slog portion of the average total cost curve
B. upward-slog portion of the average variable cost curve
C. portion of the marginal cost curve that lies above the average total cost curve.
D. entire marginal cost curve.
E. portion of the marginal-cost curve that lies above the average variable cost curve