Which of the following statements is correct?

A)Firm-specific risk is that part of a securitys stand-alone risk that cannot be eliminated by diversification.

B)Market risk is that part of a securitys stand-alone risk that can be eliminated by diversification.

C)Market risk is relevant for stocks held in well-diversified portfolios, defined as the contribution of a security to the overall riskiness of the portfolio.

D)Firm-specific risk is measured by a stocks beta coefficient.