Which of the following statements correctly describes financial options that are attached to corporate securities?

Question 20 options:

a)They can be implicit call options written by the issuing firm and provided free of charge to security holders.

b)They can be retraction privileges with which the issuer can call back the security at the face value.

c)They can be conversion privileges on bonds that are issued when the stock market is considered temporarily depressed.

d)They can be extension rights on bonds or preferred shares, which give the holders the right to sell the securities back to the issuer.