Regional Investment Corp. $($RIC$)$ hires Sam, a real estate agent, to locate investment properties for RIC. Sam learns of a warehouse availabel for $$100,000,$ buys it for himself, and offers it to RIC for $$200,000.$ Most likely, Sam

breached the agent's fiduciary duties to the principal.

did nothing wrong.

failed to take advantage of a business opportunity.

set an unreasonable price based on current market value.