Lingo Inc needs to sell 20-year, zero-coupon bonds with a par value of $1,000. The market yield on similar bonds is 6.49 percent. What periodic coupon payments it needs to promise to the buyers if they are demanding a price of $500 per bond? Assume semiannual compounding. A) 19.84 B) 28.45 C) 9.95 D) 25.47 E) 100.89