A broker who fails to promptly disclose their dual agency status is subject to:

Option A is incorrect because while some states may impose fines for certain licensing violations, there is no universal $10,000 penalty specifically for failing to disclose dual agency status. Penalties vary by jurisdiction and are typically determined by state real estate commissions, not standardized across all states at this specific amount.

Option B is incorrect because while dual agency could potentially lead to financial losses for clients, the direct legal consequence for failing to disclose is regulatory discipline, not automatic liability for money losses. Liability would depend on actual harm caused.

Option D is incorrect because the FBI investigates federal crimes, not real estate disclosure violations. Real estate licensing matters are handled at the state level by the Bureau of Real Estate.