Which of the following are the main motivation for issuing convertible bonds

a. Convertible bonds are cheaper financing instruments relative to bonds because they have a lower interest rates.

b. It is hard to price the embedded option. Firm, having an information advantage, can sell them at a higher price.

c. Mitigates agency problems between manager and bondholders.

d. Convertible bonds allow companies to increase their shares if their growth options turn out to be successful.