Final answer:
The present value of a 15-year annuity with continuous payments is $2839 (option A).
Step-by-step explanation:
To find the present value (PV) of a 15-year annuity with continuous payments at a rate of $250 a year and a force of interest of 3.9%, we can use the formula: PV = Payment * (1 - e^(-δ*t)) / δ
{ where PV is the present value, Payment is the payment amount, δ is the force of interest, and t is the number of years.}
In this case, PV = $250 * (1 - e^(-0.039*15)) / 0.039
= $2838.75.
Therefore, the correct answer is A). 2839.