In the context of the capital asset pricing model or APT, which statements are correct? (Three correct statements)

		The fair price (return) of financial security is determined by the firm's idiosyncratic risk.
		All investors will choose to hold the same optimal risk portfolios, and it implies that the passive strategy is costless and efficient.
		All the fairly priced securities will offer the same return per unit of risk, and the returns would be on the security market line.
		Arbitrage is based on the idea that assets with identical risks must have the same expected rate of return
		An investor's degree of risk aversion will determine his/her own optimal risky portfolio.