Rank the following three stocks by their risk-return relationship, best to worst. Rail Haul has an average return of 10 percent and standard deviation of 19 percent. The average return and standard deviation of Idol Staff are 12 percent and 22 percent; and of Poker-R-Us are 11 percent and 25 percent. Multiple Choice Idol Staff, Rail Haul, Poker-R-Us Rail Houl, Idol Staff, Poker-R-Us Idol Staff, Poker-R-Us, Rail Haul Poker-R-Us, Rall Haul, Idol Staff