On January 1, 20x4, $50,000 of 20-year, 6 percent debentures were issued for $56,275.20. Interest payment dates on the bonds are January 1 and July 1. The amount of premium to be amortized on July 1, 20x4, when using the straight-line method is:
A. $313.76
B. $156.88
C. $776.50
D. $ 93.11