Which of the following securities would individually be considered dilutive for purposes of calculating diluted earnings per share, assuming that basic earnings per share is $2.20 and the tax rate is 40%?
Ⅰ. Stock options outstanding with an exercise price of $10 when the average market price of stock for the year is greater than $10 but year-end market price is $8.
Ⅱ. 6% Convertible preferred stock with a par value of $100 and convertible into 2.5 shares of common stock.
Ⅲ. 5% Convertible bonds issued at par and each $1,000 bond is convertible into 20 shares of common stock.

A.None of the above.

B.Ⅰ only.

C.Ⅰ and Ⅲ only.