Treasury stock is

a. A company's own stock that it has repurchased and added to its short-term trading securities (current assets) as an investment

b. A company's own stock that is considered issued but not outstanding

c. A company's own stock that may be used to "manage" earnings-it could be sold for a gain when the price of the stock increases to help a company meet its earnings forecast

d. Booked as an increase to assets and a decrease to shareholders' equity when it is purchased