Answer:
The correct answer is letter "B": board of directors ties the salaries of management exclusively to the profits of the firm.
Step-by-step explanation:
Principal-agent problems arise when a principal hires an agent to perform duties that conflict with the agent's best interest. The problem typically occurs when the principal provides incentives to act in the principal's interest but not the agent, generating a conflictive agenda.
In that case, if the boards of directors tie the salaries of management according to the profits of the firm, they will be acting on their own interest but not in the interest of the managers, making option "B" to represent a typical principal-agent problem.