says to seek out investments that offer the greatest expected risk-adjusted real return.

says to seek out investments that offer the greatest expected risk-adjusted real return.

says to seek out investments that offer the greatest expected risk-adjusted real return.

A.  The Principle of Self-Interested Behavior
 B.  The Principle of Incremental Benefits
 C.  The Principle of Valuable Ideas
 D.  The Signaling Principle