Answer:
Bond A is far better.
Explanation:
Assuming you're spending $800 on every bond.
After twenty years,
Bond A will be:
⇒ [tex]800\times 1.15^{20}+200[/tex]
⇒ [tex]13,293[/tex]
Bond B will be:
⇒ [tex]800\times 1.05^{20}[/tex]
⇒ [tex]2,123[/tex]
So that the above is the appropriate answer.