Answer:
B) A callable AAA-rated corporate bond with a 15-year maturity
Step-by-step explanation:
Base on the scenario been described in the question, a non- callable 10-years corporate bond has been issued at a 6.15 percent promised yield the bond which has higher promised yield will be a callable AAA-rated corporate bond with a 15-year maturity period. This is so because, it has a higher promised yield .