Answer:
A) shut down; losses; $15,600
Step-by-step explanation:
A perfect competition is characterised by many buyers and sellers of homogenous goods and services. Market prices are set by the forces of demand and supply. There are no barriers to entry or exit of firms into the industry. Firms earn zero economic profit in the long run.
If in the short run, price is less than average variable cost, the firm should shut down. In this question, price ($10) is less than average variable cost ($18). The firm should shut down in the short run.
Profit or loss = Total revenue - Total cost
($10-$23) x 1200 = -$15,600
The firm is earning a loss because average total cost in greater than price.
I hope my answer helps you