A perpetuity-due with semi-annual payments consists of two-level payments of 900, followed by a series of increasing payments. Beginning with the third payment, each payment is 50 larger than the preceding payment. Using an annual effective interest rate of the present value of the perpetuity is 40,000. Calculate i O 10.06% O 10.38% O 10.68% O 10.95% O 11.19%