Stephen has researched Aggie Anvils and believes the company is poised to significantly increase in value. He has decided to purchase Aggie Anvils bonds as he needs a steady source of income. However, he still wishes that he could share in the companys upside along with the shareholders. Which one of the following bond features will help him fulfill his wish?

A) Crossover rating.

B) Warrant.

C) Call provision.

D) Positive covenant.

E) Put provision.