Treasury Stock or Treasury Shares Are Shares a Firm Has

Treasury stock or treasury shares are shares a firm has previously issued and later reacquired. Reasons for reacquiring outstanding common stock include which of the following?

A) to use in option arrangements, only
B) to invest excess cash, only
C) to defend against an unfriendly takeover bid, only
D) to distribute cash to shareholders in a tax-advantaged way, only
E) to use in option arrangements, to invest excess cash, to defend against an unfriendly takeover bid, and to distribute cash to shareholders in a tax-advantaged way