When firms are neither entering nor exiting a perfectly competitive market,A．total cost must equal total revenue.B．economic profits must be zero.C．average revenue must equal average total cost.D．All of the above are correct.
When firms are neither entering nor exiting a perfectly competitive market,
A、total cost must equal total revenue.
B、economic profits must be zero.
C、average revenue must equal average total cost.
D、All of the above are correct.
发布时间：2025-10-31 08:37:24
