Final answer:
The price at which the bonds sold is $283,019.16.
Step-by-step explanation:
The price at which the bonds sold can be calculated using the present value formula.
Present Value = Face Amount / (1 + Yield)^Years
In this case, the face amount is $400,000, the yield is 6%, and the years is 5.
Therefore, the price at which the bonds sold is:
PV = $400,000 / (1 + 0.06)^5 = $283,019.16
So, the correct answer is a) $283,019.16.