Treasury bill returns are 4%, 3%, 2%, and 5% over four years. The standard deviation of returns of Treasury bills is a) 1.85% Ob) 1.03% O c) 1.29% O d) 2.91% Question 18 4 pts What dividend is paid on preferred stock if investors require a 9% rate of return and the stock has a market value of $48.00 per share and a book value of $45.00 per share? (Hint: think dividend yield formula.) a) $4.32 Ob) $5.50 c) $3.68 d) $2.86