Explanation

Private company shareholders are more likely to experience share sale restrictions compared to public company shareholders because:

• Private companies often have shareholder agreements that restrict the transfer of shares to maintain control and ownership structure
• Public companies have freely tradable shares on stock exchanges with minimal restrictions
• Principal-agent problems can occur in both private and public companies, though they may manifest differently
• Transparency is typically greater in public companies due to regulatory reporting requirements

Therefore, option A is the most accurate answer.