Ginny & Bill Eateries reported the following account balances in the December 31, 2017, financial report:
Bonds payable .......................................................$500,000
Premium on bonds payable ....................................12,600
The bonds have a stated annual interest rate of 8 percent and an effective interest rate of 6 percent. Interest is paid on June 30 and December 31.

REQUIRED:
a. Compute the gain or loss recorded on January 1, 2018, if the bonds are called at 104.
b. Compute the gain or loss recorded on January 1, 2018, if the bonds are called at 108.
c. Compute the gain or loss recorded on July 1, 2018, if the bonds are called at 110.