$6.$ Consider the theoretical concept of the risk$-$return trade$-$off in financial markets. Which of thefollowing statements best captures the generally accepted relationship between risk and expected return$($E$($R$))?$a$)$ The relationship between risk and expected returns is ambiguous, and thus the concept of a risk$-$returntrade$-$off is not considered by cautious investors.b$)$ There is a positive correlation between risk and expected return, meaning higher risk is usuallyaccompanied by higher expected returns.c$)$ The levels of risk and expected returns are generally not factors in investment decisions; asset selectionis random.d$)$ Increasing risk typically leads to decreasing expected returns, which is why lower$-$risk assets aregenerally preferred.