A 25 year, $1000 strip bond was first issued at 5.5% compound semiannually. Five years before maturity it was sold on the bond market at a price that would provide the purchaser with a yield rate of 6.8% compound semiannually. To the nearest dollar, what was the selling price at the time? a. $716 b.$258 c. 338 d. 762 e. 263