When Grayce deposits $4,000 cash in her checkable deposit at the Beach Bank and the Beach Bank's excess reserves increase by $3,600, the desired reserve ratio is

Firms in an oligopoly are said to be interdependent. What does this mean?

What will be an ideal response?

When economic profits are positive, accounting profits

A) must be positive. B) will be negative. C) will equal zero. D) could be positive, negative or zero.