Select all that are takeaways with respect to risk and return in financial markets that we gleaned from historical data. In a competitive market, one should expect higher returns for taking on more risk In a competitive market, one will earn a higher return if they take on more risk Individual stocks and portfolios (of those individual stocks), by definition, exhibit the same risk-return trade offs We use historical data to quantify the risk-return relation because we know this same relation will hold in the future