You Own a Stock That Will Produce Varying Rates of Return

You own a stock that will produce varying rates of return based upon the state of the economy. Which one of the following will measure the risk associated with owning that stock?

A) weighted average return given the multiple states of the economy
B) rate of return for a given economic state
C) variance of the returns given the multiple states of the economy
D) correlation between the returns given the various states of the economy
E) correlation of the weighted average return as compared to the market