A life insurance company expects to pay the beneficiary of a policy $$3,000,000$ in $15$

years from today. Suppose the manager of the insurance company wants to immunize

her firm against interest rate risk and has two assets available as investments. The

assets' information is below:

How many of Bond A should the insurance company purchase to immunize against

interest rate risk?

$694$ bonds

$345$ bonds

$714$ bonds

$144$ bonds