Answer:
Bond interest expense = $2,290
so correct option is b. $2,290 
Explanation:
given data 
Bond issued = $50,000
Interest rate  = 10%
interest semi-annually = 5%
time period = 5 year
to find out
amount of bond interest expense
solution
we get first Cash interest payment that is here 
Cash interest payment = $50,000 × 5% 
Cash interest payment = $2,500
     ....................1
and Bond premium will be 
Bond premium = $52,100 – $50,000
Bond premium = $2,100       .......................2
we know interest paid semi annually so time period will be  = 10
so Amortization of bond premium will be here as 
Amortization of bond premium = 
Amortization of bond premium = $210
      .................3
so  Bond interest expense will be calculate as 
Bond interest expense = Cash interest payment - Amortization of bond premium     .......................4
put here value 
Bond interest expense = $2,500 - $210
Bond interest expense = $2,290
so correct option is b. $2,290