Which of the following statements regarding investment risk is correct? 1.Beta is a measure of systematic, non-diversifiable risk. 2.Rational investors will form portfolios and eliminate systematic risk. 3.Rational investors will form portfolios and eliminate unsystematic risk. 4.Systematic risk is the relevant risk for a well-diversified portfolio. 5. Beta captures all the risk inherent in an individual security."

2 and 5.

"1, 2, and 4."

"1, 3, and 4."

"2, 3, and 4"