Which of the following is NOT an example of factors that affect systematic risk?

A change in tax rate

Business cycle changes

A company's labor force goes on strike

An unexpected change in interest rates

None of the above

The security Market Line is a graphical representation of:

The return required given the systematic risk.

The return required given the total risk.

The return required given the first-specific risk.

The return required given the idiosyncratic risk.

None of the above.