Answer:
b. are worth face value at maturity
Explanation:
Option A - US savings bonds' can be purchased for face value, but the bondholder cannot pay interest above that amount. Therefore, it is not correct.
Option C - US bonds or bills cannot be a risky investment because the government is subsidizing. So, it is also false.
Option B - It can be paid at maturity with a face value. That is why it is the correct answer.
