I calculate the issue price, but it seems wrong. Could you please tell me whats wrong with my calculation?

On January 1, 2018, Tonika Corporation issued a four-year, $10,000, 7% bond. The interest is payable annually each December 31. The issue price was $9,668 based on ar 8% effective interest rate. Assuming effective-interest amortizations used, what is the book value of the bonds as of December 31, 2018 (to the nearest dollar)? A) $8,968. B) $9,595. C) $9,945. D) $9,641 5)S9,741 (o