Answer:
The change in the value of the bond is minus $38.27. The correct answer is option C) minus $38.27.
Step-by-step explanation:
We can use the formula for the present value of a bond:
Bond Value = (Coupon Payment / (1 + Yield)^Frequency) + (Coupon Payment / (1 + Yield)^(2 * Frequency)) + ... + (Coupon Payment + Par Value / (1 + Yield)^(n * Frequency))
Here, the bond has a semi-annual coupon payment (Frequency = 2) and a 25-year time to maturity (n = 25).
First calculate the initial bond value, assuming a yield to maturity of 4%:
Bond Value_initial = (40 / (1 + 0.04)^1) + (40 / (1 + 0.04)^2) + ... + (40 + 1000 / (1 + 0.04)^(25 * 2))
After simplifying and calculating the above expression, we find:
Bond Value_initial = $1000
Now, calculate the bond value when the yield to maturity increases to 4.25%:
Bond Value_final = (40 / (1 + 0.0425)^1) + (40 / (1 + 0.0425)^2) + ... + (40 + 1000 / (1 + 0.0425)^(25 * 2))
After evaluating the expression, we find:
Bond Value_final = $961.73
To find the change in the bond value, we subtract the final bond value from the initial bond value:
Change in Bond Value = Bond Value_final - Bond Value_initial
= $961.73 - $1000
= -$38.27
Thus, The correct Option is C.