Which of the following are TRUE regarding dividend reinvestment plans (DRIPs)? O a. All these statements about DRIPs are true. O b. DRIPs often allow investors to purchase a small number of shares per transaction. O c. DRIPs avoid most or all transaction fees if administered directly by the company. O d. By choosing a DRIP option, a shareholder automatically buys additional shares of a company on a regular basis