One day, consumer advocate Skippy Jif discovers that all brands of peanut butter in Nutville are identical. Thereafter, the market becomes perfectly competitive and again reaches its long$-$run equilibrium.

On the previous graph, use the grey point $($star symbol$)$ to show the market price in this case and the quantity produced by each firm.

Complete the following table by indicating whether each of the following variables increases, decreases, or stays the same for a typical firm in this market given the transition from monopolistic competition to perfect competition.

Variable

Increases

Decreases

Stays the Same

Price

Quantity

Average total cost

Marginal cost

Profit