Answer:
The most correct statement is
"Preferred stock is normally expected to provide steadier, more reliable income to investors than the same firm's common stock, and, as a result, the expected after-tax yield on the preferred is lower than the after-tax expected return on the common stock"
Explanation: A preferred stock is stock that gives the holder the right to a fixed dividend, whose payment consideration come first before the ordinary share dividends. This makes it a reliable income to investors, because their are considered first with a fixed dividends. Because the preferred stock are considered first, their share of dividends which is fixed will be much, therefore the after tax payment will be lower, when compared to the after tax payment of the common stock.